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ashna
Group Title
In 3 moles of ethane calculate the following.
(a) no of moles of C atom.
(b) no of moles of H atom.
(c) no. of molecules of ethane.
 2 years ago
 2 years ago
ashna Group Title
In 3 moles of ethane calculate the following. (a) no of moles of C atom. (b) no of moles of H atom. (c) no. of molecules of ethane.
 2 years ago
 2 years ago

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hanah Group TitleBest ResponseYou've already chosen the best response.2
Answer (i) 1 mole of C2H6 contains 2 moles of carbon atoms. Number of moles of carbon atoms in 3 moles of C2H6 = 2 × 3 = 6 (ii) 1 mole of C2H6 contains 6 moles of hydrogen atoms. Number of moles of carbon atoms in 3 moles of C2H6 = 3 × 6 = 18 (iii) 1 mole of C2H6 contains 6.023 × 10^23 molecules of ethane. Number of molecules in 3 moles of C2H6 = 3 × 6.023 × 10^23 = 18.069 × 10^23
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
what about atoms ?
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
have you copy pasted it @hanah ?
 2 years ago

hanah Group TitleBest ResponseYou've already chosen the best response.2
u have to find mole not atom
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
i know that .. i want for atoms too !
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
can you explain this ?
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
http://freeonlinehelpns.blogspot.in/2012/06/inthreemolesofethanec2h6calculate.html
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
i had already checked the link .. only then did i come to open study
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
i didn't understand that .. so can you explain ?
 2 years ago

hanah Group TitleBest ResponseYou've already chosen the best response.2
its just as simple just multiply 3 as given in your question with the number of mole present in the formula of ethane
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
She is right.. But it seems you are not satisfied or you did not get that ?? Right??
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
See I give you another example so that you get some understanding: See; Let suppose we have Water (already you have too) \(H_2O\) Now tell me how many H and O are there ??
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
does that mean whenever the qn is find the moles i should multiply the given atoms with the number of moles present ? EVERY TIME ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Wait go slow... I explain you everything.. Just tell me what I asked..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
If you look Atom wise: Then there are two atoms of H and one atom of O Right ??
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
So: For two H. there are 2 mole of H atom For one H there are 1 mole of H atom This is according to the atoms present in \(H_2O\).. Getting ??
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Okay now moving forward: This is for single \(H_2O\) What if I said : for \(2 H_2O\)
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
4 H and 2 O ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Yes.. So 4 moles of H and 2 moles of O..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Similarly in your question: you can just understand your question as : \(3(C_2H_4)\) How many C and H are there ??
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Sorry for \(C_2H_6\)..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Yes now you are right.
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
is it just C2H6 OR 3(C2H6)
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Ethane is just : \(C_2H_6\)
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
But you are given 3 moles of it : 3 Moles of \(C_2H_6\)
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
So you can write it as : \(C_2H_6 + C_2H_6 + C_2H_6 = 3 C_2H_6\)
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
oh okay .. understood .. so any qn like this ..i shud follow the same steps right ?
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
@hanah and @waterineyes thanks :)
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Yes.. For calculating atoms in the molecule we follow the same steps..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Understood ?? c part you can do or not ??
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
yes that i know :)
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
can you see that in nana3456 you are still typing something ?
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
or is it just my comp wch makes me see like that ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
I am wondering by seeing that..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
See this site stopped working for me when I was typing that reply.. Ha ha ha.
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
:P .. from the morning you are typing something and i were wondering why you wern't entering it :P
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
At that time I was replying to Nana and this site did not work properly for me then.. Sorry I could not reply to you..
 2 years ago
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