Hess's Law Trick Question You Should Know

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This Hess's Law question has tricked so many students on exams, but you won’t be one of them! In this video, you will understand how to use fractions and Hess's law together and how everything affects your change in enthalpy. This is also a potential extra credit question, hint hint!
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6 окт 2024

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Комментарии : 94

@araven2266 4 года назад

I love that you take the time to create quality educational content with a creative twist!

@chinemeremc.udeichi6030 Год назад

Yh exactly we really appreciate it

@stanstantalent.5605 6 лет назад

OMG, I have a chemistry final tomorrow so any kind of help is appreciated. Thanks!

@waleedashraf5863 3 года назад

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!

@latinaainlovee 2 года назад

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!!

@politicalsquid3025 6 лет назад

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!❤️❤️

@melissamaribel 6 лет назад

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 💕

@niroos6819 6 лет назад

its a pleasure to watch your videos so easy to understand and purple is my fav

@fatimaghulam8677 5 лет назад

God bless your soul. Your teaching is so simple and helpful!!

@thedukeofearl79 6 лет назад

Probably the most succinct Hess's law video (pertaining to this type of question) out there. Gracias.

@melissamaribel 6 лет назад

De nada 😊So glad you really liked the video!

@jennyliu575 4 года назад

the legend herself!!! you are so good. i thought i was super bad at chemistry, but you explain it so well!

@marisayvonne 4 года назад

Thank you for making something seeming so complicated really understandable. So grateful for your channel!

@jumbojumbojumbojumbo 9 дней назад

Mam your teaching is brilliant, I could not thank you enough

@melanyleal4650 5 лет назад

Tomorrow is my final and you just saved my life, thank you

@melissamaribel 5 лет назад

Hope your final went well!

@jihongrim5071 5 лет назад

love the color of this video! of course it was really helpful!

@melissamaribel 5 лет назад

Thank you so much!

@Yes_amyysimps Год назад

THESE VIDEOS ARE SO AMAZING😭 PLEASE CONTINUE MAKING THEMM 💗

@dharmasilansilan632 2 года назад

I couldn't understand this for the first time i saw the video but still i love the way you teach

@devil_girl148 3 года назад

👍👍👍 Thanks So much Dii

@lancegelman6243 3 года назад

Your videos help me do excellent on exams. Thanks!!

@Ethherr Год назад

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!

@rishikashah5694 3 года назад

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!

@kevindevaux4244 6 лет назад

Thank you, ive been waiting for this

@stanhelton133 5 лет назад

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.

@ElezedChirwa 4 месяца назад

Thanks madam 🎉🎉 you have really helped me

@alotte_of_anton Год назад

Super helpful, thank you!

@nothandozwane3079 3 года назад

I wish i found this channel way earlier ! Thanks for all the help

@ratanpriyakumari5135 4 года назад

i m from India....i love yr videos mam

@anisurrahman8928 4 года назад

I LOVE Y..... YOUR TEACHING STYLE... MY GAAD..

@kjkitz 5 лет назад

This is nice Melissa. It is difficult to show in 2-D how to flip, double, and halve a reaction.

@melissamaribel 5 лет назад

Thank you!

@gracebalzanelli6192 3 года назад

Thank you so much I owe you my soul

@biswajitmitra6842 4 года назад

Mam last equation i.e 3 will be multiply by -1/2 the heat chenge please check

@brittniep9219 6 лет назад

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??

@melissamaribel 6 лет назад

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.

@amptelikeshotah 2 года назад

Very helpful thanks alot

@ciennamonroll 2 года назад

god, this is just so useful, thank u so much

@hariyashu69 7 месяцев назад

super mam before my exam you taught very easy and convable method to my brain love you mam #indian

@climax7260 3 года назад

Thank you!

@himadrisahu4581 Год назад

Thanks Miss ❤️🙏

@uddhav1397 6 месяцев назад

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?

@medstressed Год назад

Mygod! You're amazing.

@rubabhasan8750 Год назад

Hesses law is so amazing! From Hasnain Abbas Naqvi,Rubab Hasan’s son.

@chakupalezaphiri4492 4 года назад

Life saver🤧💕

@osvaldoramos3265 Год назад

Why did you place the H2 on the product side and not the reactant side.

@nnennaagidi 3 года назад

You are very aesthetic.nice!

@dailyvideosinhindi6075 4 года назад

thanks Madam

@markymark5723 5 лет назад

Thank you!!!!!

@melissamaribel 5 лет назад

You’re welcome Mark!

@kylenason 3 года назад

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?

@Valeria-uz2lb 3 года назад

In 1:35 H2 is on the reactants for the last equation, why didn't you flip? (also tysm for this video!)

@nobody4191 4 года назад

I don't know when to use H products- H reactants and energy to break bonds - energy to make bonds. Please help

@mustafamuhammed4721 6 лет назад

Thank u so much 💜💜

@melissamaribel 6 лет назад

You're very welcome 💕

@ahmadnoor2777 5 лет назад

Mam u r very useful.

@rayamoooooo685 4 года назад

thankz

@salmakazmi4995 6 лет назад

sooooo aesthetic

@anurag8862 4 года назад

Thanks mam.👍👍❤

@pinkribbons476 6 лет назад

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?

@melissamaribel 6 лет назад

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.

@lehlohonolophadi6620 6 лет назад

Thank you, i am writing Chemistry in 2 hours time. (x)

@melissamaribel 6 лет назад

You're so welcome 🤓

@cockulatorofficial9453 3 года назад

I literally was just doing this question on my homework a minute ago.

@bhatzahid9204 6 лет назад

Love from KASHMIR

@nguyenmanh113 4 года назад

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

@Pawsandchukles 5 лет назад

Hello , Mam your big fan ..... Best of luck

@jeromebatiatik20atik14 5 лет назад

Why you did not mutiply½ to delta h 45.9?

@mahfuzahmmed9224 5 лет назад

Thanks mom....

@lavendermage1442 6 лет назад

Could you by any chance teach me how to balance combustion chemical equations?

@lavendermage1442 6 лет назад

Melissa Maribel thank you so much 😊

@marioulrichb.a.5607 4 года назад

Ok, but how does food become joules?

@siriusblack6337 4 года назад

Hi maam. I dont know why theres parenthesis g and s. I dont know what dat means

@KellieJo93 4 года назад

if you multiply 1/2 from 2HCN wouldn't that be 1HCN

@roa1437 3 года назад

i need to pay you notebook the dot one where can i found it

@gamerx6543 4 года назад

I am rutuja thanks mam ur best n perfect 🙂👍😀

@lauramesa7064 5 лет назад

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.

@melissamaribel 5 лет назад

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

@lauramesa7064 5 лет назад

my exam is Friday ! :((@@melissamaribel

@melissamaribel 5 лет назад

Ok no worries, DM then on Instagram @hellomelissam it just helps to see the question.

@lauramesa7064 5 лет назад

I just did .. thanks so much@@melissamaribel

@sameerkinakool1669 4 года назад

Not bad

@milfhunter6947 3 года назад

thanks for real that will really help me with my scholarship exams tommorow

@rishankrj1297 5 лет назад

What If the constituent equations are not given... How do I form the equations? Plz help me out

@melissamaribel 5 лет назад

Do you have a specific question you are thinking of?

@rishankrj1297 5 лет назад

@@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

@GamingKing269 5 лет назад

For my exams I am not given the constituent equations either

@melilag464 5 лет назад

i can't figure out how you added the reactant and products:/

@JYDemir 5 лет назад

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