Holy- Thank you so much! My chemistry teacher prefers "teaching" through homework instead of in the classroom, and I simply couldn't tell head from tail from stoichiometry. Thank you so much sir. You saved my grade. Thank you again, enjoy one more subscriber, and have a great day! :D

im struggling with stoichiometry so much and this truly helped a lot. thank you somuch

Give this man the Noble Prize.

@maddy4926

3 жыл бұрын

Ikr

Your voice is incredibly soothing, and this video is incredibly informative and easy to digest. I swear I would have full-on freaked out over stoichiometry if it weren't for this video. You are doing God's work. Thank you.

@wbreslyn

3 жыл бұрын

Thanks, I sometimes think my voice puts people sleep!

I've been incredibly stressed out and overwhelmed starting college during the pandemic. Chemistry has always been my hardest subject, but I feel so, so relieved that you teach in a way that's easy for everyone to understand. For the first time in my life, I'm passing my chemistry course, and with flying colors. From the bottom of my heart, thank you. Bless your heart, bless your soul, bless your family, and may the rest of your life be filled with only good things.

@wbreslyn

3 жыл бұрын

This is a very challenging time to be starting college. And chem is tough even in person! I've very happy I can help and thanks for the kind words!

@matiusclicarelli700

Ай бұрын

Luckily ​@@wbreslyn you're a chem teacher and not an English teacher. Lol.

I missed two classes mid semester and my 98 has dropped down to an 80…. This is the lesson I missed! Everything that we have learned since has made sense but on each exam there are two questions worth 22-25 points each that require that understanding this as one of the first steps. So I was getting those wrong and them using the wrong answers to answer the other questions🫣🤷🏼‍♀️ I have an exam and a final left… I need a minimum of an 87 in this class. This is the first time I felt confident! Thank you Dr. B!

@wbreslyn

2 ай бұрын

Wow, that is a precipitous drop! If you haven't seen them there are guides with lots of stoichiometry practice over on my website at www.breslyn.org. All the best on your exam and final!

Wow. Thank you so much for carrying me through chem!

Thankyou this was really being over complicated and you helped me understand this by breaking it down. Again thankyou.

@wbreslyn

3 жыл бұрын

You're very welcome!

I had no idea what was going on in chem, but now I know what I am doing. Thanks.

@wbreslyn

3 жыл бұрын

Excellent!

Respect and best regards for this excellent work... i'm so happy that everybody have the opportunity to be a good learner with the best master... Thank you Dr. B

@wbreslyn

5 жыл бұрын

Thank you for pointing that out! I'll make a correction and repost the video in a bit. Let me know if you spot anything else (or if you see something that would improve the video). That would be most appreciated. --- Dr. B

i love you so much man you saved me

Thank you !

Thanks a lot Dr.B

@wbreslyn

4 жыл бұрын

You’re welcome! ---Dr. B

I think I’m starting to understand stoichiometry

can you do video with limiting reactant

Hi Dr. B when I divide 85.2 over 17.3 I get 5.00293 instead of 4.99. And shouldn’t the balanced equation for H2+N2 have the ration of 3:1:2? Why is there a co-effieficient of 2 for N2? Thank you for your time

a hero

today is my chem final exam and luckily I found this :-) thanks a lot

@wbreslyn

3 жыл бұрын

Hope you exam went well!

@user-ro5md3xl2h

3 жыл бұрын

@@wbreslyn thank you very much! the exam is easier than I expected :-)

Thanks man

@wbreslyn

Жыл бұрын

You're welcome!

how did you figute out the 22.4 for the conversion factor im so confused 5:53

"The reaction between magnesium with 20 cm³ 2.0 mol dm-³ hydrochloric acid produces 120 cm³ of hydrogen gas at room temperature. What is the mass of magnesium required for this reaction?" help- I don't know how to do the steps to get the answer. I already read & try to understand the example given in our textbook but the example have different unit than what given in the question above and it makes me confuse. (Answer: 0.12g)

I am doing booklet work that isn't sinking in and these videos do help. Is there a bunch of them that would teach me stoichiometry?

@wbreslyn

Жыл бұрын

This might help: Mole/Stoichiometry Playlist: kzread.info/head/PLZR1BGWBaZ1zrlxkYJDNW_HWdUib0Q8Pa Molar Mass in Three Easy Steps: kzread.info/dash/bejne/oWeBr6SIaLremrw.html Understanding the Mole: kzread.info/dash/bejne/dq2AzdaGgLfbeLw.html Moles - Gram Conversions: kzread.info/dash/bejne/k32ql9CraL20qdo.html How to Balance Chemical Equations: kzread.info/dash/bejne/rKGY2q-lkpuedtY.html Mole Ratio: kzread.info/dash/bejne/m2tlpK-PnNWzmdo.html Reaction Stoichiometry: kzread.info/dash/bejne/pKaI07GsirPWkbg.html

Wayne! I love your video… can you please do more videos on this stoichiometry? Fe + O2 reacts to form FeO Calculating the mass of iron (II) oxide produced from 56.8 g of iron in excess to oxygen I cannot seem to nail it down. Help

@wbreslyn

2 жыл бұрын

Thanks for the kind words. I really need to do a video with lots of worked stoichiometry problems. It is one of the harder topics for students. Here's what I have right now: Mole/Stoichiometry Playlist: kzread.info/head/PLZR1BGWBaZ1zrlxkYJDNW_HWdUib0Q8Pa

at 5:48, it should be liters per mole

How do you end up w 54g of O ?

I was wondering if I am missing something but on the formula on 6:59 is the N2 on the left hand side of the equation supposed to have a two in front of it or is it supposed to be blank. If I am missing something please correct me because I am having trouble understanding why the 2 is there.

@wbreslyn

Жыл бұрын

You are right, there shouldn't be a two there! I suppose since I'm not using N2 in the stoichiometry part nobody noticed! You are very observant! I'll put a note in the video description about the error. Thanks for pointing that out!

85.2g/17.03g/mol = 4.99 mol NH3?? Im so confused... shouldn't the answer be 5.002??

@jasonchu212

Жыл бұрын

Yeah I got 5.002 as well and shouldn’t the balanced ration be 3:1:2?

Can someone explain why he divided by 22.4 ?

Would this be the amount of reactants and product equation

@wbreslyn

4 жыл бұрын

It should help you find that information. This playlist is also useful: kzread.info/head/PLZR1BGWBaZ1zrlxkYJDNW_HWdUib0Q8Pa --- Dr. B

I am indian! Perhaps be wondering that how's your voice is little bit of melody Love from india!

Dr. B where can I find the little map you use to go from grams to moles and whatnot?

@wbreslyn

5 жыл бұрын

Here you go! www.breslyn.org/chemistry/stoich/index.php --- Dr.B

Would the process be the same if the ratio is 1:1?

@wbreslyn

3 жыл бұрын

Yes, it would. Good to be consistent!

My mole related questions solving carrier came to an end rather soon! To make it brief, I got stuck. :( I'm sorry to bother you, but do you mind helping me? My school is closed due to covid-19. The question says, "Calculate the amount of CO2 that could be produced when 2 moles of C are burnt in 16g of dioxide."

@moniquefaithboodram

4 жыл бұрын

Hi there! The answer is 22g: brainly.in/question/7696394

@bhawnamehta2261

4 жыл бұрын

@@moniquefaithboodram Thanks a lot! :)

@moniquefaithboodram

4 жыл бұрын

@@bhawnamehta2261 No problem!😁

3H2+2N2 to 2NH3 isn’t balanced though? I’m so confused why you have a 2 in front of N2…

@wbreslyn

2 жыл бұрын

This might help: kzread.info/dash/bejne/o5qTw7aIdcSditY.html

how to do that without using stoichiometry calculator :

Wait so when you convert liters to moles, why is it divided by 22.4? I'm sure it's something super simple but I am so confused right now. edit: i figured it out nvm XD

@picazo333

2 жыл бұрын

can you explain it to me

@ckbear6566

2 жыл бұрын

22.4 is the molar volume constant, so you multiply the moles by this constant to get the volume (in liters).

I still need help

@wbreslyn

3 жыл бұрын

Here's my best stuff for stoich: Mole/Stoichiometry Playlist: kzread.info/head/PLZR1BGWBaZ1zrlxkYJDNW_HWdUib0Q8Pa Molar Mass in Three Easy Steps: kzread.info/dash/bejne/oWeBr6SIaLremrw.html Understanding the Mole: kzread.info/dash/bejne/dq2AzdaGgLfbeLw.html Moles - Gram Conversions: kzread.info/dash/bejne/k32ql9CraL20qdo.html How to Balance Chemical Equations: kzread.info/dash/bejne/rKGY2q-lkpuedtY.html Mole Ratio: kzread.info/dash/bejne/m2tlpK-PnNWzmdo.html Reaction Stoichiometry: kzread.info/dash/bejne/pKaI07GsirPWkbg.html

@animebinger7974

3 жыл бұрын

@@wbreslyn The amount of effort this guy puts in....jesus christ

@sanatani_manushy77

2 жыл бұрын

@@animebinger7974 isn't that uh had crush on him??

Ma God bless you I hope both sides of your pillow is cold i hope you find a thousands dollars in ur pockets Ihope your children be the way you want them to be

@wbreslyn

7 ай бұрын

Thank you!

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