Thermochemical Equations Practice Problems
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- เผยแพร่เมื่อ 21 ก.ย. 2024
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How much heat gets released or absorbed in a chemical reaction? We'll learn how to calculate this. We will use molar mass and conversion factors to figure out the enthalpy change in exothermic and endothermic reactions, which are represented by thermochemical equations.
7 years later, his videos still make a difference in grades. thank you man
Sir*
... 8 years later
yeah, apparently my brother's girlfriend used this guy to pass college, I see why!
9 years and counting!
@@egloodude9550 10 now!
It's called "Introduction to Thermochemistry and Enthalpy."
This video is really helpful. Thank you so much. I am able to catch up for our midterm exams.
@@returnofjedii2033 same dude
why am i getting negative # ? while yours is positive?
Do more videos on "Calculating the change in Enthalpy using Hess's Law" please! Thank you
Why don't we multiply the negative number??
That sad moment your paying for college and you use Khan Academy and Tyler DeWitt to learn since they teach better for free!
agent475816 Nah, Tyler DeWitt is a savior. My professor explains things in 5 seconds which is EXACTLY what I find problematic.
agent475816 How can someone 'try look smart' if they 'dumb it down to a 3rd grade level'? And if you're so well accomplished why exactly are you watching this video? it's clearly aimed at people who don't understand, so if you "know all this stuff" why are you watching?
agent475816 He explains everything within 3 minutes but does examples for the rest of the video...
agent475816 You may want to re think your argument.
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ikr that's a exactly what I wanted to say
not enough money coming through donations
He has a job at MIT
Pretty sure he died
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Saved my butt, dude. Have a test today and I basically became an expert on this overnight because of you. My teacher isn't particularly bad, in fact he's pretty good but I'm taking summer courses and those are always rushed and go by extremely fast. You're a lifesaver.
Hey everyone, I'm here to help. If you have any questions or just want to learn more, click on the link in the description above. It'll take you to a page where you can ask me questions.
Please help me how to perform calculations on the rate of chemical reaction
a great question! in an exothermic reaction, the heat would be consider a product. because products are things that get made by a reaction, and here heat is getting made.
who are you responding to?
@@VeryRetadred let him cook
The best chemistry teacher in the world. Uses visual and audio tools so so well. Explains chemistry in simple layman terms. Amazing!!
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hey bro how is everything going after long years?
You're right, I just forgot to add a negative sign. Sorry about that.
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Try checking out Leah4Sci.com. Her videos are excellent and very clear, much like Tyler Dewitt but for Organic
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Jarrod Kearney I find sesame street harder to understand.
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hey bro how is everything going after 9 years?
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hey bro how is everything going after long years?
You make this so clear I got a A+ on my chemistry test because of your molarity video I hope I'll get a A on my final!
hey bro how is everything going after long years?
12 years later and its still useful
Absolute CHEMISTRY SAVIOUR!!!!!! Your tutorials decode all the confusion instilled by smug Chemistry teachers-absolute brilliance! Many thanks...again!
Tyler honey you have saved my life with these videos. so clear, leaves nothing unexplained,easy to follow love it! why cant chem teachers be this clear!!!!!!!!
hey bro how is everything going after long years?
I have a quiz on thermochemistry today, and a final on Friday. This guy is very good at teaching this material. I would have paid money for him to teach me the chemistry I needed to learn to pass this class.
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Prof is behind on lectures and exam is in just a few days. This helped me a ton, thank you.
oh my goodness, this video is for 11 years ago and still helping me
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hey bro how is everything going after long years?
I love how he finds the most simple ways to solve problems instead of doing the whole mole conversion table this makes more sense to me thank you so much Mr.DeWitt and god bless you!!!
hey bro how is everything going after long years?
We're having a test on this stuff tomorrow and since I've been out sick the past two days this video really helped me catch up and understand! thanks!
3:59 you used multiplication. Negative times positive equals negative.
this guy is clutch. my chemistry teacher explains things in a minute and talks at warp speed and expects us to retain everything. after the lessons, im gonna come straight here .
hey bro how is everything going after long years?
I got -1,530 for the first part. Don't know how you could miss that.
I think i'll pass my final exam now you are a life saver man. Thanks.
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hey bro how is everything going after long years?
Passion and smiling make your work effective man.Thank you for making chemistry easy.
Tyler, thanks so much for your help! Your videos have been a great tool for me throughout my class. Chemistry is such a challenging subject for me and you really break things down and simplify the problems! I was working at these problems for hours last night and just couldn't grasp it, and now after watching your explanations, I have it down pat! Thanks again!
hey bro how is everything going after long years?
I just passed a chemistry test because of this video and i barely passed anything in chemistry prior. Thank you
You are a great teacher. Much better than a lot of other instructors. You explain very well. Thanks.
moballer12 set up the conversion factors and drew everything out and it was awesome.
Grams>>> Moles >>> Molecules >>> atoms of Y
It seriously took me two chemistry classes to figure that out:
"Why mols? what is that going to do? I don't need the number of molecules."
Let me first say that you are the only reason I haven't dropped out of my chemistry class. Also, I would like to say that you truly have a special gift for teaching; you are the only person who explains things in a way that makes sense! Lastly, I would happily pay a monthly subscription to have access to all of your videos (*hint hint PLEASE MAKE MORE). Anyway, I just wanted to say that you're the best and thank you for all you do. (:
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Your name is spoken with the utmost respect by numerous students throughout my chemistry class.
hey bro how is everything going after long years?
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@@Papiiswagg what you are doing right now?
@@PRINCE-999 civil engineer, i own a contracting bussiness.
9 years later still your videos are the best. Thanks
hey bro how is everything going after long years?
I never leave comments,... but you TRULY make chemistry easier for me. THANK YOU TYLER!!!! After this I will complete my degree. You explain things so well. Best explanations I have come across from class, other videos on youtube, and even with a Tutor!
hey bro how is everything going after long years?
So sad to be on a school where your teacher doesn’t explain well and Tyler Dewitt helps you to understand everything
You're literally the only person that makes sense of chemistry
Thank you Dr. Tyler! I’m beyond thankful for your videos! I’m a pre-med student and my professors are not the best, so most of the time I need to relay on the internet to help me, your videos have been so so so so helpful. The most hard thing for me to understand was Enthalpy, I watched your other video explaining endothermic and exothermic reactions and it saved my live. I don’t know why professors like to make everything seem hard. I wouldn’t be able to tell you how thankful I am to you and your videos, your teaching is so fun, it makes the subject so interesting and I always want to learn more. Thank you so so much ❤️
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I know that this has been said before, but really I owe you my thanks Mr. DeWitt! :D
I have been struggling to understand Thermochemistry during my Chemistry course for more than a week and thanks to your brilliant explaination and examples it all finally clicked into place.
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Best wishes!
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This was so great. Everything was so organized and I loved how you put the conversions on those notecards so you can show how you can choose one or the other. Thank you so much!
hey bro how is everything going after long years?
So thankful for his clear and concise explanation of Chemistry! Slowly but surely, I am understanding the concept that will be on test Monday!!! Make more videos, please!!! You explain things in way that I can comprehend!!!
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He uses sooo much paper for his videos. Not a complaint, just a fact. But really, thank you for explaining everything so clearly.
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Awesome video! This was explained better in 12 minutes than it was by my teacher in over a week!
Can you do a video on reaction rates and chemical equilibrium please?
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Thanks a bunch:)
This is actually pretty easy....easier than I thought. Great video as always
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hey bro how is everything going after long years?
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Tyler, love all the videos sir. Saved my life more than once. Online STEM educator of the year. Why is this answer not -1104.1k/j?
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THANK YOU SO MUCH! YOU TEACH BETTER THAN MY CHEMISTRY TEACHER!
The quality of your videos are phenomenal. Thanks a lot.
hey bro how is everything going after long years?
I got -1531.488 so rounding it to four significant figures would make it -1531 right?
Thank you SO MUCH! This video is *chefs kiss* perfecto! Online school isn't easy, but thank goodness for your channel!