Calculating the Moles of an Element in a Compound

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Q1. Propyl acetate, C5H10O2, gives the odor and taste to pears. How many moles of C are present in 1.50 moles of propyl acetate?
Q2. How many moles of propyl acetate, C5H10O2, contain 0.480 mole of O?
Step 1 State the given and needed quantities.
Step 2 Write a plan to convert moles of compound to moles of an element.
Step 3 Write equalities and conversion factors using subscripts.
Step 4 Set up the problem to calculate the moles of an element.

[@mohamedalaa4043]

You saved my life, I watched this the night before my exam, i was completely lost. Today was my semester exam and I fuckin nailed it. Thanks to you You have no idea how much you helped me

[@thomasbekkering]

Was supposed to learn this like 2 years ago but I could never get my head around how it works until I saw your simple explanation. TYSM

[@gauravnemani2684]

thank you took me forever to wrap my mind around

[@CHO-tu9mz]

You showed the most obvious solution that my teacher couldn't. Can't thanks enough

[@Bignate2254]

Had to watch it 3 times until it made sense, but we got it. Thanks man, massive help

[@melissathomas8918]

Thank you for explaining this concept so much better than the curriculum given to me!! I appreciate your time in making this video. Please keep making them.....I may need more assistance :)

[@beneditofrade4374]

thank u so much, u literally saved my grade rn

[@jasamino21]

Thank you SO MUCH.

[@lanalaurenlivinglegends8169]

I feel so happy and levitated after watching this.... never would have geussed its this flipping easyyy like what the fudgeee was i thinking

[@kurtandrewtampos7270]

thanks bro, my gen chem task is overdue right now and i really need to pass it because my midterms is coming up

[@leosanderz5742]

Thank you very much!!

[@emmanuelmakinde7694]

thank you

[@harithakalnath7595]

Thank u for explaining this concept. What a help for me🥰🥰🥰🥰. Very clear explanation.

[@joshuaonyekwe1306]

😮 amazing

[@jeyagowri735]

Thank u so much🥲

[@sonalijha3252]

Really Great explanation 🙌

[@marvin8882]

Thank you very much

[@StevesUniverse]

But why when i find the grams for each substance separately using the moles i have obtained now of that compound. It doesn't add back to the total mass of the 1 molecule of the compound.

[@KnowLaz_music]

would it be done the same way if it was two different elements in the same molecule but one having moles and the other not ....... like e.g ... how many moles of carbon if 0.480 mole of O ?

[@deus6533]

I love you sir

[@Who_aaaaam_I]

Thanks!

[@artymis2459]

i never knew it was so simple.. i was always confused lol

[@graemecaskey2235]

so how do you work out say the mass fraction of carbon when the units given for a range of compounds is in % mole?

[@alaivaa]

Thank you, the method I used was a lot less efficient.

[@sarahiprado8708]

So the subscript represents the number of moles?

[@cryoatix]

if they cancel out then why are they dividing each other?

[@acestar7700]

hey can you please make a video on how we got this method or how we derived it ?

[@esperanceuzabakiriho6206]

GOD BLESS YOU

[@cdrshernandez1164]

I don’t understand how 7.50 moles of Carbon fit into only 1.50 moles of the entire compound??

[@sarawagih725]

CDRS Hernandez forealllll like what???

[@noahjohannessen3355]

The mole is relative to the representative particle’s mass

[@StudyForceOnline]

@@noahjohannessen3355 1 mole can be made to equal x molecule(s), x atom(s), x particle(s). When we write 5 moles of Carbon = 1 mole of C5H10O2, it's like writing 5 individual atoms of carbon per 1 molecule of compound.

[@rasheedshehadeh7657]

I was so confused as well but then i got it. Moles could refer to molecules or atoms. So 7.5 moles of ATOMS of carbon can fit inside 1.5 moles of MOLECULE.

[@thatonenessy8020]

Omg THANK YOU!!! I literally couldn't understand my textbook at all!!

[@Mkarn321]

Could you do one where you find the number of atoms, while given the number of moles. Also of an element in a compund

[@StudyForceOnline]

Hi, could this be what you're looking for? kzbin.info/www/bejne/mJPXkISBiKubd8k If not, write your question as it appears on your worksheet

[@RichmondAgbozo-o9j]

Why didn't we do the same for the oxygen also

[@NPCSN]

Acetate is pronounced “a-see-tall?”

[@ITSLIZZ111]

No its “ass-eh-tayt”

[@marvin8882]

It dont matter....no more.I just wanna solve that shit mehn

[@joelmathewg]

instead of saying moles of compound what to do if they ask weight of compound

[@StudyForceOnline]

Ask the complete question here: biology-forums.com/index.php?action=post;board=35.0

[@brookei7707]

mass = moles/ molar mass

[@bkbasler]

Is that not 5 atoms of carbon not moles?

[@StudyForceOnline]

Doesn't matter

[@OrnellDavis]

Where are the calculations????

[@StudyForceOnline]

In the video?

[@meg2769]

How can a mole both represent anything as well as be a unit of measurement equaling 6.02x10^23? In the video you say that 5 atoms = 5 moles, but wouldn't 5 moles be 6.02x10^23x5?

[@StudyForceOnline]

In the first example, I made the ratio 1 mole of the molecule = 5 moles of carbon. I didn't write "5 atoms = 5 moles".

[@JD_1776]

bruh my chem teacher taught us a totally different way that gets different answers for the same problems

[@StudyForceOnline]

Same question?

[@JD_1776]

@@StudyForceOnlineyeah. i think you teach it the right way, now ive thought of it. i think my chem teacher did something wrong in teaching it. the way she taught it and the way in her notes are different

[@StudyForceOnline]

@@JD_1776 Yes, that's possible. Feel free to reply back if you have doubts about another question

[@c3abdullah226]

Test tom

[@erza153]

thank you so much

[@shamrock1445]

thank you!

[@abcd-ne3cb]

Thanks a lot !