I swear to god this is way better than having to sit in front of a screen for three hours listening to a boring lecture, with a not so skilled lecturer that can't get the point across as well as you do! So thank you for making these videos and putting all that effort into them, they're short, simple, colorful, get straight to the point, and on top of all of that... your explanations are pretty clear as well. Thank god I came across this channel, I now know from where I'm gonna be studying chem. for the rest of this year!
Chemistry is so difficult and you teach it so that anyone is able to learn. You make it seem so much more simple and I love the creative editing it makes the videos so much more appealing and keeps me engaged. You saved my chemistry grade, thank you!!
Your explanations and methods of teaching are so clear I'm just annoyed I hadn't found your channel earlier. Thank you so much for the effort you put into teaching and helping out others!❤️❤️
This really bothered me until I substituted a letter for each molecule. The subscripts must have overwhelmed me where I couldn’t figure out the math for problem.
First video I've watched of you and what my teacher couldn't explain in 3 classes, you explained in 1 video! such a creative and easy way to solve them, tysm!
Or you can divide the first and third equations by 2 and you'll get the enthalpy of formation of NH3, CH4 and HCN. Then you can use ΔΗ= Σ ΔΗf(products) - Σ ΔΗf(reactants), anyway great explanation and video!
What would you do with the 1/2 H2 on the reactants side in 2:45? I know you added the h2s on the products side but isn't there a remaining H2 on the reactants that must cancel out?
Opposite sides subtract so I would add the 3/2 H2 and 2 H2 together to get 3 1/2 H2 and then subtract the 1/2 H2 that was on the reactants side and this gives us the 3 H2 on the final answer.
Extremely helpful! The only thing I am stuck on is, if anyone has a recommendation, when we are not given the equations that will give us our goal equation... Do I just try to come up with ones??
ive been looking at different questions in which two elements in all four equations are the same, but when it comes to changing up the equations only one is required to change since we don't manipulate them if the element is in all equations. when I look at the answers to my homework though they show that the heat has changed for two equations not just one. I think i'm getting lost when it comes to having the same elements in all of the equations.
Hey Laura, feel free to tweet me the exact question and I am happy to explain it on my Live show this Sunday at 12PM Pacific Time. You can tweet me at @hellomelissam and use the hashtag #askmelissamaribel
1:45 add everything on the left side of the arrow for the reactants add everything on the right side of the arrow for the products combine them to get the overall reaction
@@melissamaribel yeah.. Like calculate delta hf for benzene or methane. And the values for each element is also given.. But the equations are not given in the question. We have figure it out. Help me out with that plz
I love that you take the time to create quality educational content with a creative twist!
Yh exactly we really appreciate it
I swear to god this is way better than having to sit in front of a screen for three hours listening to a boring lecture, with a not so skilled lecturer that can't get the point across as well as you do! So thank you for making these videos and putting all that effort into them, they're short, simple, colorful, get straight to the point, and on top of all of that... your explanations are pretty clear as well. Thank god I came across this channel, I now know from where I'm gonna be studying chem. for the rest of this year!
OMG, I have a chemistry final tomorrow so any kind of help is appreciated. Thanks!
Chemistry is so difficult and you teach it so that anyone is able to learn. You make it seem so much more simple and I love the creative editing it makes the videos so much more appealing and keeps me engaged. You saved my chemistry grade, thank you!!
Your explanations and methods of teaching are so clear I'm just annoyed I hadn't found your channel earlier. Thank you so much for the effort you put into teaching and helping out others!❤️❤️
I wish everyone could find my channel at the beginning of the semester too! Happy you like my teaching method and you are so welcome 💕
its a pleasure to watch your videos
so easy to understand and purple is my fav
Probably the most succinct Hess's law video (pertaining to this type of question) out there. Gracias.
De nada 😊So glad you really liked the video!
God bless your soul. Your teaching is so simple and helpful!!
the legend herself!!! you are so good. i thought i was super bad at chemistry, but you explain it so well!
I love your use of colors! Thank you!
Thank you for making something seeming so complicated really understandable. So grateful for your channel!
THESE VIDEOS ARE SO AMAZING😭 PLEASE CONTINUE MAKING THEMM 💗
You are the best
You really make chemistry look simple 💯
Mam your teaching is brilliant, I could not thank you enough
love the color of this video! of course it was really helpful!
Thank you so much!
This really bothered me until I substituted a letter for each molecule. The subscripts must have overwhelmed me where I couldn’t figure out the math for problem.
I couldn't understand this for the first time i saw the video but still i love the way you teach
First video I've watched of you and what my teacher couldn't explain in 3 classes, you explained in 1 video! such a creative and easy way to solve them, tysm!
Your videos help me do excellent on exams. Thanks!!
Or you can divide the first and third equations by 2 and you'll get the enthalpy of formation of NH3, CH4 and HCN.
Then you can use ΔΗ= Σ ΔΗf(products) - Σ ΔΗf(reactants), anyway great explanation and video!
Tomorrow is my final and you just saved my life, thank you
Hope your final went well!
👍👍👍 Thanks So much Dii
Thank you, ive been waiting for this
At the end, where did you get the times 2 from for the fractions?
Mam last equation i.e 3 will be multiply by -1/2 the heat chenge please check
Super helpful, thank you!
What would you do with the 1/2 H2 on the reactants side in 2:45? I know you added the h2s on the products side but isn't there a remaining H2 on the reactants that must cancel out?
Opposite sides subtract so I would add the 3/2 H2 and 2 H2 together to get 3 1/2 H2 and then subtract the 1/2 H2 that was on the reactants side and this gives us the 3 H2 on the final answer.
I wish i found this channel way earlier ! Thanks for all the help
Extremely helpful! The only thing I am stuck on is, if anyone has a recommendation, when we are not given the equations that will give us our goal equation... Do I just try to come up with ones??
Hey Britt, was there a specific question you were thinking of? You can also DM or tweet me the question @hellomelissam if that makes it easier.
Thanks madam 🎉🎉 you have really helped me
This is nice Melissa. It is difficult to show in 2-D how to flip, double, and halve a reaction.
Thank you!
Why did you place the H2 on the product side and not the reactant side.
In 1:35 H2 is on the reactants for the last equation, why didn't you flip? (also tysm for this video!)
why some time i need to do the combustion to find the enthalpy of formation, while this video need to do like above? to find the total enthalpy change
I can’t get all my terms to cancel and I can’t reach the goal in a problem in my book. What do I do?
i m from India....i love yr videos mam
I don't know when to use H products- H reactants and energy to break bonds - energy to make bonds. Please help
I LOVE Y.....
YOUR TEACHING STYLE...
MY GAAD..
Thank you so much I owe you my soul
god, this is just so useful, thank u so much
super mam before my exam you taught very easy and convable method to my brain love you mam #indian
Very helpful thanks alot
Hi maam. I dont know why theres parenthesis g and s. I dont know what dat means
Thank you!
What would happen if you the H2 did not cancel out properly?
ive been looking at different questions in which two elements in all four equations are the same, but when it comes to changing up the equations only one is required to change since we don't manipulate them if the element is in all equations. when I look at the answers to my homework though they show that the heat has changed for two equations not just one. I think i'm getting lost when it comes to having the same elements in all of the equations.
Hey Laura, feel free to tweet me the exact question and I am happy to explain it on my Live show this Sunday at 12PM Pacific Time. You can tweet me at @hellomelissam and use the hashtag #askmelissamaribel
my exam is Friday ! :((@@melissamaribel
Ok no worries, DM then on Instagram @hellomelissam it just helps to see the question.
I just did .. thanks so much@@melissamaribel
Thanks Miss ❤️🙏
i need to pay you notebook the dot one where can i found it
Why you did not mutiply½ to delta h 45.9?
Hesses law is so amazing! From Hasnain Abbas Naqvi,Rubab Hasan’s son.
Mygod! You're amazing.
Life saver🤧💕
i can't figure out how you added the reactant and products:/
1:45 add everything on the left side of the arrow for the reactants
add everything on the right side of the arrow for the products
combine them to get the overall reaction
I Seen this video for neet exam in India 👍liked it
Can you tell me to which grade student you teach this concept in your country?
What If the constituent equations are not given... How do I form the equations? Plz help me out
Do you have a specific question you are thinking of?
@@melissamaribel yeah.. Like calculate delta hf for benzene or methane. And the values for each element is also given.. But the equations are not given in the question. We have figure it out. Help me out with that plz
For my exams I am not given the constituent equations either
Could you by any chance teach me how to balance combustion chemical equations?
Melissa Maribel thank you so much 😊
Thank u so much 💜💜
You're very welcome 💕
Thank you!!!!!
You’re welcome Mark!
Thanks mam.👍👍❤
thanks Madam
You are very aesthetic.nice!
Hello ,
Mam your big fan .....
Best of luck
Mam u r very useful.
I am rutuja thanks mam ur best n perfect 🙂👍😀
Thank you, i am writing Chemistry in 2 hours time. (x)
You're so welcome 🤓
Ok, but how does food become joules?
Love from KASHMIR
sooooo aesthetic
if you multiply 1/2 from 2HCN wouldn't that be 1HCN
thankz
Thanks mom....
Lab u po finally maka S sleep na ko🫡
Not bad
how is this a trick question
Oml it makes sense
There’s no trick to this trick question tho??? It’s literally straightforward hess with simple manipulation of the given equations