Honestly the (soda/pop/coke) cans falling was my reaction to seeing that, it basically added comedic effect. Cody: *cuts hair* Everyone: *falls down like a pile of stacked cans*
god I miss those comfy days of binging on his beekeeping vids. Don't mean to say CHB is bad, au contraire. However his old vids of small experiments and tweaks are such a comfortable watching experience.
@@garethbaus5471 Nah, just a roommate who likes to close the bottles really really tight and bottles with bottlecaps that have worse texture than sandpaper.
"But it's not! Isn't that WILD?" My God, I love how enthusiastic and excited you get about science, Cody, even after all these years you're still so passionate! Never change, buddy!
Could go back to his roots of being an absolute madman with his experiments With each video i see less and less enthusiasm which makes me sad, knowing im seeing someone not enjoying the same things as much. Or he needs a companion who can help
Seeing Cody all shaved and groomed is like watching one of those sci-fi movies where the aliens make near perfect clones except for one tiny difference between the original and the clone.
@@chrimony Honestly, my only question is did she recognize him, or did Cody have to explain that he's a youtuber and wants to take a video of him getting his hair cut?
“Pressure units”. That’s it, from now on I’m referring to all my units by their usage, not their names. So it’s 4 time units before I have to go out, and I’ll drive 8 distance units to get there.
It's useful if you are going to take difference, when the actual value doesnt matter or divide between equal units Not quite useful to tell your friend that you will be arriving at 1 time unit Day? Hour? Week? Minute?
The moment when you didn't start with the usual intro, I knew something is going to happen. I have to admit, a small part of me was hoping you to knock down the can tower! Haha ty for the laugh.
I'd noticed this phenomenon (the increased pressure causes the bottle to ring when struck which always intrigued me and the bottles become much harder) but never really thought about why or how it happened. Brilliant explanation as always Cody, thank you, this is why I enjoy seeing your videos so much, you explain things in a way that really makes sense to me
I loved the editing in this video. I really liked how you cut the audio while speeding up the video, but then still had it sync perfectly after the speed up. It kept you from having to do VO AND you still get your DiResta speed up shot. I honestly will remember this method for my own use later
That haircut is looking sharp, Cody Don! Thank you for your effort and content over the years! As a fellow Utahn, I hope to run into you one day, but regardless I'm proud to be in this community with you.
This was an amazing primer video for the original Partial Pressure video. When you released the first video ~ a year ago, I ended up with more questions than answers, I didn't really follow your explanation. But after watching this Soda demonstration, then re-watching the old video, it just clicked! An awesome, intuitive demonstration. BTW, +1 for the haircut, takes me back to the old days on this channel.
This vid let me finally grok how Priestly was able to get pressurized CO2 into water by placing it in a 100% CO2 atmosphere at standard pressure. Thanks!
Well good thing you recorded the process of stacking those cans! A lesson we've seen Cody learn many times over. The law of partial pressure does always amaze me, though; it seems so counter-intuitive.
I find it awesome that almost 2 million people chose to get educated by you on a recurring basis. It gives me a little bit of hope for humanity. Keep them coming!
Lookin sharp young fella. Love your stuff man. You've taught me a lot and sparked a massive interest in chemistry. Big love from Canada! Got all my buddies watching too!
The practical lessons: store the bottles upright after they've been opened(to reduce the surface area so it reaches equilibrium slower), and the ratio of soda to air in the bottle when you close it will determine how flat it will go when it does reach equilibrium. The question I have now, is whether soda with a CO2 partial pressure of atmospheric pressure will taste flat. If it doesn't, then you could keep soda in a pouch, not let any air in, and it won't ever go flat. Though I think if that was possible, I suspect it would already be sold that way.
@@jeromelee428 You could get the CO2 partial pressure up to ~14PSI with a bag type container, because there's no nitrogen or oxygen in the bag. That's a couple thousand times higher than totally flat soda(equilibrium with atmosphere).
Thank you Cody, you made this video right in time! I'm studying chemistry and have been wondering how the partial pressure affected the equilibrium and you explained just that. The way I understand it from your video is that only the pressure of the carbon dioxide is important for the solution's concentration, in this situation. In theory it doesn't matter what pressure there is in the container of any other gas involved.
Had I seen this a few years ago my mind would have been blown. Studying chemistry has slowly sapped the wonder from some things and massively increased it in others.
Interesting. This reminds me that I'm still a bit baffled by your supercritical gas experiments, and why the ratio of liquid to headspace in the vial makes a difference in the pressure.
I had just got done solving a problem where an updated linux kernel broke my graphics drivers resulting in slow playback for any HD resolutions. I exclaim, "oh great!" and after fuming for a second realized it wasn't the drivers, it was a cheesy slowmo effect.
I was thinking that the room temperature air was sucked into the bottle when you poured the liquid out. It compresses when coming in contact with the cold soda water. Then expands greatly when warmed up... but I have no idea ? you the man Cody!
This is interesting. For years and years I’ve seen little “pumps” that would attach to the top of the soda bottle, so you could pump it up and keep the soda from getting flat... according to this, it would still go flat. Now I want to buy one of those pumps to see if that’s trie
Actually, the best way to stop your soda from going flat would be to ensure that no gas escapes when you pour yourself a glass, only liquid. So we should take advantage of the fact that the gas within the bottle is a higher pressure than the liquid, and simply extend a tube down to the bottom of the bottle with a Bunsen/gas-style tap on top, sealed by a gasket in a modified lid. Then put a silicone tube on it that you put into your drinking glass. Turn the tap and the pressure will push down on the fluid, forcing it up the tube and into your glass.
Me: Cody has a new video up. Wife: Whatever. Me: Oh, Cody got his hair cut. Wife: Oh nice. He looks handsome. After 4.5 years, my wife is interested in watching Cody'sLab with me! :D
It reminds me of an "invention" to keep bubbles in an opened bottle of Champagne. They used a pump to put pressured air inside the bottle. I tried to explain that this is useless (air CO2 partial pressure is very low) and even dangerous because if you pump to a pressure close to the maximum the bottle can handle then it may explode when the bubbles of CO2 add extra pressure to the air above the remaining liquid. Even if a little bit of O2 or N2 may dissolve in the liquid the pressure will probably stay too high. If it doesn't explode the extra O2 may oxidize the wine giving a bad taste without any advantage concerning the saving of CO2 bubbles. They never replied to my comments...
Ah, our beloved Cody giving answers to questions we didn't know we have about problems we didn't know existed. But I'm proud to say that I figured out the explanation before it was explained :) And that intro made me laugh, thanks for that!
This concept, that speed of reaction, surface equilibrium, osmotic pressure are dependent on partial pressure only was single most amazing thing for me I discovered in Chemistry class in University. As a physics boy I thought of pressure as something universal, almost independent of medium before that.
New hair, an ASMR style intro - what's happened to the real Cody thinks I? Then loud clattering, ahhh balance is restored...great work sir, great work.
Interesting side application of this: if you squeeze your 2-liter soda bottles a bit to force out the air after pouring some, you reduce the volume that the CO2 can expand into (as long as the bottle retains the squeezed shape), as well as reducing the rate at which it equilibrates, so they stay carbonated for longer.
I also thought about just squeezing the air out instead of purging with CO2. You can get virtually zero air remaining in the bottle that way, but then I don't happen to have a CO2 bottle lying around either. But that would still have the same end result, there's no way the squeezed bottle would hold its shape. The rate of equilibration is the same btw, doesn't matter if there is air or not (which is the point of this video).
@@foogoid8682 The rate of equibration is slower. That was what Cody was talking about toward the end when he simply laid the cap on top instead of screwing it on. If there's air, the H2CO3H2O+CO2 rate is faster since the partial pressure of CO2 in air is 0.0004 atm, whereas if you push the air out, the partial pressure of CO2 is 1 atm.
@@ciaran1449 Try it yourself, the bottle retains the squished shape for nearly a full day, especially toward the bottom half of the bottle. See my reply to foogoid as to why.
Partial pressures are always fun. Took we a while to get my head around this, and this is a really nice, real world demonstration! I have a nice one as well: Try blowing up a few balloons to about the same size, basically as full as possible. Use normal air for some, and pure N2 for others. Can you guess what happens?
You're really asking this of the guy who filled multiple balloons with various gasses and inhaled the gas to show what the change in pitch would be for the human voice both high and low? LOL!!!
To be honest, I don’t think this is such a trivial question. I also work with various gases, but I could not find any references of others performing this experiment. Only science-fair level projects of deflation rates of balloons filled with different gases.
Thank you for this clear demonstration of Dalton's partial pressure law. Visible, explainable, and simple - for a complex idea. Perhaps another idea would be why it's more difficult to breathe at sea level with high H20 vapor pressure in the air.
8:40 I swear people close their drinks like this and are surprised why the drink is flat after 5 mins, SMH more air means more carbon dioxide used to establish equal pressure 🤦♂️🤦♂️
@@theCodyReeder At first I assumed it took 5 hours for the intro bit where back and front of cans was swapped around, was that possible to do without taking the whole stack down. Or did you end up making that because it kept falling over rebuilding it in different ways? I don't think I'd have the patience to rebuild a thing like that multiple times, I'd probably build it with the back against a solid to lean against. Maybe even glue it in place if it was to be in the background for an extended period of time.
Loved the video, I think you just proved that those bottle cap pumps that you use to pump the bottle full of air to keep the soda from going flat have absolutely no effect on the soda at all. Other than making a louder pssst sound when you open the bottle and increase the total pressure making the bottle more likely to fail.
Video isn’t sponsored, I just have a mild addiction to sweet tea.
Mild hehe
Next time just purposely knock over all of the bottles like that again that was just too funny love the intro
other brands are available
That's what a youtuber hidding sponsors would say!
@@markm1138 the 9
6 hours ago: Wife angry because I didn't notice haircut.
Now: Hey! Cody from 12,000 km away got a haircut!
Takes me about 3-4 weeks to notice when my wife gets her hair cut but I notice spittle on my monitor, from laughing at your comment, in 0.001 seconds.
Hope the sofa is comfy! XD
Honestly the (soda/pop/coke) cans falling was my reaction to seeing that, it basically added comedic effect.
Cody: *cuts hair*
Everyone: *falls down like a pile of stacked cans*
I didn't notice Cody got a haircut. That explains the clip at the end tho.
Is your wife's name Karen and a feminist?
Your future is grim, my man...
He has the hair; so he just needs to start doing bee vids again and we can all pretend to be 5 years younger.
damn :')
He might when he gets the bees up to the base
He also has the chainmaille on
Love short hair Cody
god I miss those comfy days of binging on his beekeeping vids. Don't mean to say CHB is bad, au contraire. However his old vids of small experiments and tweaks are such a comfortable watching experience.
Weird soda behavior: When cody drinks 200 cans of soda and exhibits strange behaviors.
Sweet tea isnt carbonated
Doing his bit to see how much damage artificial sweeteners do.
Pleasing taste, some Monsterism.
This guy touches mercury with his hands but uses gloves to open seltzer.
the knife blade tip once bit him, hes been a bit more glovey.
Have you tried opening bottles without gloves? They'll heck your hands up real good ;___;
@@LordDragox412 dang you must have soft hands.
He has them becouse it's cold probably
@@garethbaus5471 Nah, just a roommate who likes to close the bottles really really tight and bottles with bottlecaps that have worse texture than sandpaper.
"But it's not! Isn't that WILD?"
My God, I love how enthusiastic and excited you get about science, Cody, even after all these years you're still so passionate! Never change, buddy!
"CAUTION: Objects behind you in the camera are closer than they appear"
I read this just as it happened. God
MiqelDotCom it was fake
He is going to “will it charcoal” his hair, I just know it
Edward Grossman he’s already done that
Lol will it puddle
If he can charcoal carbonated water I'll be impressed...
@@timfubar5439 You need a shit ton of water to make it visible but you can actually do that.
@@timfubar5439 easier would be using charcoal to produce carbonated water
With the hair cut i feel like im watching an old school cody video except its HD.
He does look a lot like himself.
and you can hear him
Could go back to his roots of being an absolute madman with his experiments
With each video i see less and less enthusiasm which makes me sad, knowing im seeing someone not enjoying the same things as much.
Or he needs a companion who can help
@@ricardasist I am guessing it is companion related and possibly depression related as well.
@@ricardasist He's had a rough few months recently, so he's probably a bit bummed about it
Cody: "Hi, can I film you when you're cutting my hair?
Haridresser: "Uuummm..."
Cody: "Don't worry. It's for Internet."
"description down in the link" haha
@@jwalker7567 Mercury or heavy water buildup
I even read this comment and thought "yeah whats wrong with that sentence?" Still took a few minutes to realise and had to come back and re read
Let me guess: you were one of the guys in class who heard: "Just seeing if you were awake." a lot.
Haha my native language it's spanish so that's the order I would usually say it so my brain automatically translated it and I didn't even realized it
9:25 “description down in the link”
9:24 so you can hear the d
my brain auto-corrected that lol nice catch
I CANT BREATHE
I'm sure he noticed during editing but was like "better this way, it is"
Love the opening, from him cleaning off the camera to him knocking over all the cans.
@Elijah Walsh I felt so bad for Cody when he realized he had just wasted 5 hours stacking cans which he knocked over before even completing his intro.
@@davidroddini1512 He did it on purpose
@JBroMCMXCI Personally, I am not so sure. How do you know it was on purpose?
@@JBroMCMXCI Nah, he looks rather sad. Didn't look fake.
Spoiler alert
Seeing Cody all shaved and groomed is like watching one of those sci-fi movies where the aliens make near perfect clones except for one tiny difference between the original and the clone.
yeah, the story here definitely is the hair cut :p
I think the story is the girl cutting his hair for some reason?
@@dobos420 You mean the employee at the hair salon? Yeah, "some reason".
@@chrimony Honestly, my only question is did she recognize him, or did Cody have to explain that he's a youtuber and wants to take a video of him getting his hair cut?
Cody: here's an experiment
Fanbase: hmm yes, you did get a haircut
I did not expect the hair cut Cody, it looks nice btw.
For a moment I thought I was watching an old video
Definitely, now the beard and mustache and he's ready for the girls again!
@@DC_DC_DC_DC Yeah. Wonder what Kanyon is up to these days..
looks kinda worse tbh :(
The question is, did he get her phone number despite wearing the chain mail?
“Pressure units”.
That’s it, from now on I’m referring to all my units by their usage, not their names. So it’s 4 time units before I have to go out, and I’ll drive 8 distance units to get there.
It's useful if you are going to take difference, when the actual value doesnt matter or divide between equal units
Not quite useful to tell your friend that you will be arriving at 1 time unit
Day? Hour? Week? Minute?
@@0Arcoverde that way they cant complain about you being early or late (;
@@0Arcoverde I will be arriving in 1 time microunit.
So 4 nanoseconds before you have to get out, and you’ll drive 8 micrometers to get there? Seems very inefficient to me...
@@0Arcoverde time unit = seconds, distance unit = meters
so 4 seconds and 8 meters
The moment when you didn't start with the usual intro, I knew something is going to happen. I have to admit, a small part of me was hoping you to knock down the can tower! Haha ty for the laugh.
Yeah, best intro in a long time on this channel :-)
But it was really sad too
I'm glad he kept the first take in. As soon as they started getting stacked I felt like he'd record knocking them down
When you read my long name, I stole your sandwich yea I agree. It looked fake......
@@ethanlocke3604 if your an OG than it was beautiful. I've been subbed to Cody since right before he started growing his hair out.
I'd noticed this phenomenon (the increased pressure causes the bottle to ring when struck which always intrigued me and the bottles become much harder) but never really thought about why or how it happened. Brilliant explanation as always Cody, thank you, this is why I enjoy seeing your videos so much, you explain things in a way that really makes sense to me
Next up on Cody's Lab: "hair, will it charcoal?"
Spoiler alert!
I thought he already did hair
@@quincedapence are you from the future?? 😮
Already did that one...
@@Lunas2525 took it from a brush wasn't it
I loved the editing in this video. I really liked how you cut the audio while speeding up the video, but then still had it sync perfectly after the speed up. It kept you from having to do VO AND you still get your DiResta speed up shot. I honestly will remember this method for my own use later
Ayyy it's finally done and makes sense. Great video and explanation.
That haircut is looking sharp, Cody Don! Thank you for your effort and content over the years! As a fellow Utahn, I hope to run into you one day, but regardless I'm proud to be in this community with you.
*"Description down in the link."*
I love it.
This was an amazing primer video for the original Partial Pressure video. When you released the first video ~ a year ago, I ended up with more questions than answers, I didn't really follow your explanation. But after watching this Soda demonstration, then re-watching the old video, it just clicked! An awesome, intuitive demonstration.
BTW, +1 for the haircut, takes me back to the old days on this channel.
Lol Cody that was a great intro next time just roll with it and say "welcome back to Cody's lab" after the filmed catastrophy 😊🔬❤️❤️❤️❤️❤️
"How long has that been there?"
I've been sitting here watching your videos for a few years now...
This vid let me finally grok how Priestly was able to get pressurized CO2 into water by placing it in a 100% CO2 atmosphere at standard pressure.
Thanks!
Nice to see another vid out! Love your work bud! Thanks for all the info over the years!
that intro tho...
Best Intro i have seen on youtube for a long time
Video uploaded 33 seconds ago yet this comment is 2 hours old
made my day
How is this 2 hours ago the video was uploaded like 13mins ago
@@tortrest282 Patreon
Well good thing you recorded the process of stacking those cans! A lesson we've seen Cody learn many times over. The law of partial pressure does always amaze me, though; it seems so counter-intuitive.
OMG Cody!!! You look so good with your hair cut! 😉
I find it awesome that almost 2 million people chose to get educated by you on a recurring basis. It gives me a little bit of hope for humanity. Keep them coming!
The copper lab coat is looking good, I laughed very hard too
Lookin sharp young fella. Love your stuff man. You've taught me a lot and sparked a massive interest in chemistry. Big love from Canada! Got all my buddies watching too!
While getting his haircut, do you think he talked about all the charcoal he's eaten?
Love your content Cody. Never change. Also the new haircut looks pretty sharp my dude.
The practical lessons: store the bottles upright after they've been opened(to reduce the surface area so it reaches equilibrium slower), and the ratio of soda to air in the bottle when you close it will determine how flat it will go when it does reach equilibrium.
The question I have now, is whether soda with a CO2 partial pressure of atmospheric pressure will taste flat. If it doesn't, then you could keep soda in a pouch, not let any air in, and it won't ever go flat. Though I think if that was possible, I suspect it would already be sold that way.
It just tastes acidic
going flat is basically just having an equilibrium with the partial pressure with CO2 so if you have that kind of drink you wont taste the difference
@@jeromelee428 You could get the CO2 partial pressure up to ~14PSI with a bag type container, because there's no nitrogen or oxygen in the bag. That's a couple thousand times higher than totally flat soda(equilibrium with atmosphere).
@@sleepib Sorry, I misunderstood what you meant
you could squeeze the bottle before tightening the lid, get the soda level as high up as possible without it spilling everywhere then tighten it.
Thank you Cody, you made this video right in time! I'm studying chemistry and have been wondering how the partial pressure affected the equilibrium and you explained just that. The way I understand it from your video is that only the pressure of the carbon dioxide is important for the solution's concentration, in this situation. In theory it doesn't matter what pressure there is in the container of any other gas involved.
Had I seen this a few years ago my mind would have been blown. Studying chemistry has slowly sapped the wonder from some things and massively increased it in others.
holy shit cody breaks my expectations everytime, love this channel
Interesting. This reminds me that I'm still a bit baffled by your supercritical gas experiments, and why the ratio of liquid to headspace in the vial makes a difference in the pressure.
It's the oxygen content
Thanks. A fantastically simple yet very instructive experiment.
Short hair cody, I'm digging it!
Looking fresh cody new cut looks good
2:56 i thought i was having a stroke with the slow motion lmao
I had just got done solving a problem where an updated linux kernel broke my graphics drivers resulting in slow playback for any HD resolutions. I exclaim, "oh great!" and after fuming for a second realized it wasn't the drivers, it was a cheesy slowmo effect.
@@eideticex I think cody did it cause he was talking too fast and wanted to keep it intelligible.
@@batt3ryac1d he got some minor details a bit wrong live, so he had to rerecord the voice bit, but the new recording was a bit longer.
Great video! This is one of the most tangible examples of Dalton's law of partial pressures that I've ever seen.
This brings back memories of when I was around 7 and would stare at soda when I was bored
I was thinking that the room temperature air was sucked into the bottle when you poured the liquid out. It compresses when coming in contact with the cold soda water. Then expands greatly when warmed up... but I have no idea ?
you the man Cody!
This is interesting. For years and years I’ve seen little “pumps” that would attach to the top of the soda bottle, so you could pump it up and keep the soda from getting flat... according to this, it would still go flat. Now I want to buy one of those pumps to see if that’s trie
I'm catching this video over a year later and I was wondering the same thing.
Actually, the best way to stop your soda from going flat would be to ensure that no gas escapes when you pour yourself a glass, only liquid. So we should take advantage of the fact that the gas within the bottle is a higher pressure than the liquid, and simply extend a tube down to the bottom of the bottle with a Bunsen/gas-style tap on top, sealed by a gasket in a modified lid. Then put a silicone tube on it that you put into your drinking glass. Turn the tap and the pressure will push down on the fluid, forcing it up the tube and into your glass.
Me: Cody has a new video up.
Wife: Whatever.
Me: Oh, Cody got his hair cut.
Wife: Oh nice. He looks handsome.
After 4.5 years, my wife is interested in watching Cody'sLab with me! :D
Very nice demonstration Cody !! Thanks for sharing!!
80% of all commens: New haircut. :D
Great video, Cody! Looking sharp, Dude!
It reminds me of an "invention" to keep bubbles in an opened bottle of Champagne. They used a pump to put pressured air inside the bottle. I tried to explain that this is useless (air CO2 partial pressure is very low) and even dangerous because if you pump to a pressure close to the maximum the bottle can handle then it may explode when the bubbles of CO2 add extra pressure to the air above the remaining liquid. Even if a little bit of O2 or N2 may dissolve in the liquid the pressure will probably stay too high. If it doesn't explode the extra O2 may oxidize the wine giving a bad taste without any advantage concerning the saving of CO2 bubbles.
They never replied to my comments...
Humans
Well it would work if they used CO2 but then it wouldnt realy be an "invention" 😂😂
They don't use co2, they use nitrogen or argon. We have one. That's how they get you. You can't just go to Wal-Mart and buy 12g co2 cartridges.
@@xenonram lol thats realy weird what is this thing called?
@@xenonram You can buy "SodaStream" CO2 tanks...
Hey mate, really digging the new haircut! The new intro also seems to snuggle right into the theme of the channel, i like it!
You look good cleaned up once in a while. Overdue haircuts getting done make me feel like I'm in charge of my life again. Little things.
Loved the introduction to partial pressure science and your hair cut. Good luck to you.
Now: Gets Haircut
Later: Gives up on Science, and buy's motorcycle.
Cody, you are officially the most dedicated youtuber I have ever watched
Oh my! You cut your hair! Never thought you would! But looks good!
It actually was that hairdresser you see at the end of the video.
Ah, our beloved Cody giving answers to questions we didn't know we have about problems we didn't know existed.
But I'm proud to say that I figured out the explanation before it was explained :) And that intro made me laugh, thanks for that!
that hair fits you, good decision to get a haircut
Yup, now we just need to get him to stop using mercury as mouthwash after munching on charcoal.
Nooooooo! He's the Wild West science rogue! He can't get a "business cut"! Cody! Say it ain't so! 😄
He startled me :/ Well, at least there's a timelapse at the end.
Every time i see one of your videos man it makes my day.
I wish we bigfoots had soda out here in the forest
I see you more than JustinY.
I'll bring you some, just pose for a photo
Don't do it, Bigfoot! The soda will give you the diabeetus!
Bigfoot, you're just going to have to be satisfied with that brown cow. 😁
This is beautiful stuff, cody, your work, your effort, your explaination, your delicious fail, and your haircut.
If that wasn't a "Cody's Lab" intro them idk what is lol Cody in a nutshell ♥️
Great video Codon. You are the best man❤️
The blooper at the start was perfectly timed.
Shaila perfect staged and perfectly faked . Yeah cause 200 cans takes 5 hours!
love em vids man, keep on doing you!
9:40 thank you for having saved the world.
9:23 "description in the link"
I love Cody.
"He cleans up well."
This concept, that speed of reaction, surface equilibrium, osmotic pressure are dependent on partial pressure only was single most amazing thing for me I discovered in Chemistry class in University. As a physics boy I thought of pressure as something universal, almost independent of medium before that.
0:47 That's the sound of Failure my friends! 😂😂😂
TheSunlessAngel sound of fakery!
Staged and fake.
Looking Sharp Cody! I love the new look!
Great demonstrations! You look good, keep your hair like that. :-)
New hair, an ASMR style intro - what's happened to the real Cody thinks I? Then loud clattering, ahhh balance is restored...great work sir, great work.
Interesting side application of this: if you squeeze your 2-liter soda bottles a bit to force out the air after pouring some, you reduce the volume that the CO2 can expand into (as long as the bottle retains the squeezed shape), as well as reducing the rate at which it equilibrates, so they stay carbonated for longer.
Makes you wonder why soda doesn't come in bags with a valve.
No that's untrue, the carbonation will always push the bottles back to their original shape. It actually speeds up the de-carbonation process.
I also thought about just squeezing the air out instead of purging with CO2. You can get virtually zero air remaining in the bottle that way, but then I don't happen to have a CO2 bottle lying around either. But that would still have the same end result, there's no way the squeezed bottle would hold its shape. The rate of equilibration is the same btw, doesn't matter if there is air or not (which is the point of this video).
@@foogoid8682 The rate of equibration is slower. That was what Cody was talking about toward the end when he simply laid the cap on top instead of screwing it on. If there's air, the H2CO3H2O+CO2 rate is faster since the partial pressure of CO2 in air is 0.0004 atm, whereas if you push the air out, the partial pressure of CO2 is 1 atm.
@@ciaran1449 Try it yourself, the bottle retains the squished shape for nearly a full day, especially toward the bottom half of the bottle. See my reply to foogoid as to why.
I'm happy that I solve this one before you explained it ;) Good video man, keep it up!
so does that mean earth atmospheric pressure will go down as we pollute it with co2 emissions?
No.
At the start it’s like asmr with Cody until the cans come crashing down
Happy birthday Ren
Partial pressures are always fun. Took we a while to get my head around this, and this is a really nice, real world demonstration! I have a nice one as well: Try blowing up a few balloons to about the same size, basically as full as possible. Use normal air for some, and pure N2 for others. Can you guess what happens?
Pure nitrogen will burst. :)
You're really asking this of the guy who filled multiple balloons with various gasses and inhaled the gas to show what the change in pitch would be for the human voice both high and low? LOL!!!
To be honest, I don’t think this is such a trivial question. I also work with various gases, but I could not find any references of others performing this experiment. Only science-fair level projects of deflation rates of balloons filled with different gases.
Hair cut looks good! Thanks for another great educational video.
when you dont have a green screen, use a flannel background w/ a similar coloured glove 👌
Honestly, best intro yet!
I was expecting the bee logo in the corner to "wipe" away at the beginning of the vid.
Nice haircut, or did you travel in time...exciting.. , terrible OCD Square squed red background. Excellent video, as always
hair looks great! must have been liberating getting rid of it all.
and now im watching old cody vids =] today will be a productive day at work
That's one mighty fine looking hair dresser/barber
Thank you for this clear demonstration of Dalton's partial pressure law. Visible, explainable, and simple - for a complex idea. Perhaps another idea would be why it's more difficult to breathe at sea level with high H20 vapor pressure in the air.
8:40 I swear people close their drinks like this and are surprised why the drink is flat after 5 mins,
SMH more air means more carbon dioxide used to establish equal pressure 🤦♂️🤦♂️
Such a cool demonstration!
0:18 since when did Cody start doing asmr?
I like the haircut. I also appreciate the intro and the subsequent incident following.
I feel like you did the whole can thing on purpose.
that_G_EvanP he did, it doesnt take 5 hours to stack 200 cans.
BibiBosh it does when they keep falling over!
@@theCodyReeder At first I assumed it took 5 hours for the intro bit where back and front of cans was swapped around, was that possible to do without taking the whole stack down. Or did you end up making that because it kept falling over rebuilding it in different ways?
I don't think I'd have the patience to rebuild a thing like that multiple times, I'd probably build it with the back against a solid to lean against. Maybe even glue it in place if it was to be in the background for an extended period of time.
Loved the video, I think you just proved that those bottle cap pumps that you use to pump the bottle full of air to keep the soda from going flat have absolutely no effect on the soda at all. Other than making a louder pssst sound when you open the bottle and increase the total pressure making the bottle more likely to fail.
We did get a Cody with his hair cut!
Great video, Cody.