Wow I love these videos. You target the subject, talk about the definition and clarify that we get the words and definition and then you explain a problem!!
lol, I dont recommend adding salt for the sake of speeding up your pot of pasta water. It takes 58.43 g of table salt just to raise 1 Liter of water 1.8 degrees F, which isnt going to do anything except make your food taste like a salt block and give you a heart attack! :P
The salt comment at the end was so funny! You are awesome!! Keep doing what you do! Thank You very much you know how to explain Chem quickly and clearly!
Thank you SO much for this! I finally had an "ah-hah!" moment w.r.t. how BPE works when you broke down what happens to the particles🙌🏿🙌🏿 Feel more confident to attempt the calculations now. ChemEng student from South Africa ❤️
when she says that one mole of NaCl breaks up into two moles, would the same go for CaCl2...what i mean to ask is, is it correct to say there is one mole of Ca and 2 moles of Cl of the dissociated compound ?
With NaCl, as she explained with ionic compounds i think in the video "Colligative properties", breaks up each sharing the same amount of molality. So if NaCl is 1 molal, then when it breaks up there is 1m of Na and 1m of Cl (total is two). So for CaCl2, 1m of Ca 1m of Cl and 1m of Cl. Yes in total there are 2 molal of Cl but colligative properties depeneds on the number of particles. So you are correct but just keep in mind the concept of individual particles.
Can u help me with this homework please? solute:CH3OH solute (gr):24 water mass(g):981 then they ask me to look for the freezing-point and boiling point. thank u in advance
This is extremely belated, but no. The way it works is: if the boiling point is higher, a higher temperature is required for the liquid to boil. If said liquid was water, the water would have to exceed the normal 100 degrees Celsius required for it to boil, meaning the pasta would be hotter as well, allowing it to soften more quickly.
Actually, this is one of the few misconception about boiling point. Because the thing about boiling water is that if it reach a certain temperature, it will just turn into steam and the temperature won't rise anymore. Now if it turns into steam it wont cook the food anymore (e.g. pasta) because pasta relies on the temperature of the water to cook. But because we are increasing it's boiling point, the water can now increase temperature without turning into steam.
This video is not correct. Boiling point elevation is not due to the solvent's affinity for the solute. In the dilute solution limit, the energy of the solvent-solute interactions does not change as you boil some solvent. (Why would it? The same number of solvent molecules surround each solute molecule.) Instead, what changes is the volume available to the solvent molecules, which decreases their entropy. This decrease in entropy with boiling is what leads to boiling point elevation. Intermolecular interactions are not relevant to first order.
Any easy way to discount the intermolecular interaction argument is that the effect is independent of the solvent, whereas the explanation in this video says that solvents which have strong interactions should elevate the boiling point more.
Very good presentation
Wow I love these videos. You target the subject, talk about the definition and clarify that we get the words and definition and then you explain a problem!!
lol, I dont recommend adding salt for the sake of speeding up your pot of pasta water. It takes 58.43 g of table salt just to raise 1 Liter of water 1.8 degrees F, which isnt going to do anything except make your food taste like a salt block and give you a heart attack! :P
Short, concise and exactly what you need to know. Will definitely be checking out more of your videos! Thanks!
4:32 dat smile though
How could you catch that smile in such a less time . You will be having some extra power bro. #just for fun .
The salt comment at the end was so funny! You are awesome!! Keep doing what you do! Thank You very much you know how to explain Chem quickly and clearly!
you're videos are always so clear and to the point. thank you!
Very cool ❤
its cute when u smiled at the end ^^
She is so good at explaining things!
love your talking pace! lol i actually understand you well!
OMG I LOVE YOUR VIDEOS. They honesty make me go from confused to educated. Please keep teaching.
good job. you should smile more often
Your videos always help me in chem. Thank you!
Its grt to understand at one go !!! beautiful summary !!
These videos are are excellent. Thanks so much for helping me.
awesome as always
Its impossible to understand without watching it atleast 2 times.....Eventhough stay that way lady you r special
do you know the formula or steps taken? sorry for the trouble.
Wow short sweet and to the point thank you- I may just pass my chemistry final
Thank you for the explanation
Thank you SO much for this! I finally had an "ah-hah!" moment w.r.t. how BPE works when you broke down what happens to the particles🙌🏿🙌🏿 Feel more confident to attempt the calculations now. ChemEng student from South Africa ❤️
Pretty good explanation
think i've heard my teacher lecture this 3 times and he made -0 sense. Thanks for putting it all together.
thanks
you are very good teacher
keep it up
In my chem class we do not use the Vant Hoff factor, how is this different? Thank you!
this is impressive,every video is awesome!the teacher too is beautiful n intelligent :)
Thank you, very well presented!
Beautiful
It'll either be given, or you'll need some basic algebra to find it.
how to find out the constant K?
when she says that one mole of NaCl breaks up into two moles, would the same go for CaCl2...what i mean to ask is, is it correct to say there is one mole of Ca and 2 moles of Cl of the dissociated compound ?
With NaCl, as she explained with ionic compounds i think in the video "Colligative properties", breaks up each sharing the same amount of molality. So if NaCl is 1 molal, then when it breaks up there is 1m of Na and 1m of Cl (total is two). So for CaCl2, 1m of Ca 1m of Cl and 1m of Cl. Yes in total there are 2 molal of Cl but colligative properties depeneds on the number of particles. So you are correct but just keep in mind the concept of individual particles.
Sorry it wasn't Ionic it was Electrolytes.
flamerz94 thankyou! :)
Can u help me with this homework please?
solute:CH3OH
solute (gr):24
water mass(g):981 then they ask me to look for the freezing-point and boiling point. thank u in advance
Why boiling point of solution is higher than that of a pure solvent? Plz reply
Because mix a pure water with non volatile solute ....then your Boling point is higher then pure solvent...ohk
oh my god I LOVE YOU, YOU JUST MADE MY LIFE ALLOT EASIER.
Thank you so much!
i love u for teaching me this stuff :D
stay blessed :)
thank u it's gonna be very usefull for me
i honestly like te way you speak,
Very good mam😘
correct me if im wrong but if the boiling temp is higher, it will take longer to boil=take longer to boil pasta
This is extremely belated, but no. The way it works is: if the boiling point is higher, a higher temperature is required for the liquid to boil. If said liquid was water, the water would have to exceed the normal 100 degrees Celsius required for it to boil, meaning the pasta would be hotter as well, allowing it to soften more quickly.
thank you for this !!
Actually, this is one of the few misconception about boiling point. Because the thing about boiling water is that if it reach a certain temperature, it will just turn into steam and the temperature won't rise anymore. Now if it turns into steam it wont cook the food anymore (e.g. pasta) because pasta relies on the temperature of the water to cook. But because we are increasing it's boiling point, the water can now increase temperature without turning into steam.
Thank you so much, very helpful! =)
+Di Tamayo thank you for watching! You can download our free mobile app to watch our chem videos more conveniently. Check it out here - bit.ly/1OswH1y
You're an awesome teacher!! :-)
But, Why are you in such a rush? :O :O
you speak way to fast lol. but thank you for the explanation. very helpful
You can slow the speed you know?
True! I thought the speed is 1.25 on my settings lol
I need a separate video on how much salt to put in my pasta...I still don't get that part :) Great vids BTW
dang this girl is good!
Omg love ur vids!
God bless you
THANK YOU
AWESOME
Wow very nice and good understanding ... But your speaking level very high ...cool down your speaking speed
thanks a lot ..I understand my course much better ..
no Red hair ribbon or whatever that was :/
I... I think I'm in love with you....
*swallows*
i always giggle everytime i watch her
lol.
hmm...what could be the reason :))
slow down..
Yeah I feel like she is taking a simple topic and complicating it
Nice
just put too much salt in my Past; it cooked very well but the side affect is huge loool
love your videos but could you speak slower. that would be helpful. thanks for the post!
Crash Course in Honors Chemistry lol
It's has been 8 years dude
Think I accidentally clicked fast forward
I love you mam ❤️❤️❤️❤️❤️
Why she talks so fast? :O Like fast forwarding the Track ! ! !
very helpful, but talks WAY too fast.
cute drawings. LOOL
You speak and escalate way too fast in my opinion. It feels heavy to follow.
+TheEhkiddo trueee,she should slow down
Love from kashmir
हिन्दी मे बनाऐ
slow dowwwwnnnnn Im tryna learn
put the speed on 0.75
This video is not correct. Boiling point elevation is not due to the solvent's affinity for the solute. In the dilute solution limit, the energy of the solvent-solute interactions does not change as you boil some solvent. (Why would it? The same number of solvent molecules surround each solute molecule.) Instead, what changes is the volume available to the solvent molecules, which decreases their entropy. This decrease in entropy with boiling is what leads to boiling point elevation. Intermolecular interactions are not relevant to first order.
Any easy way to discount the intermolecular interaction argument is that the effect is independent of the solvent, whereas the explanation in this video says that solvents which have strong interactions should elevate the boiling point more.
toking varr fust
Can you slow down