Homework Help: chemistry

Posted by tomi on Saturday, September 20, 2008 at 4:58pm.

Determine the number of moles of
a) N atoms in a sample of C7H5(NO2)3 that has the same number of O atoms as 12.6g C6H12O6

Someone posted a way to answer this question but i still don't understand

chemistry - DrBob222, Saturday, September 20, 2008 at 5:02pm
And you may not understand the way I do it either. Instead of us posting until you do, why don't you post how it should be worked and tell us, in detail, what you don't understand about it.
- chemistry - jay, Saturday, September 20, 2008 at 5:19pm
  i figured i would find the number of moles of oxygen from 12.6g of C6H12O6, after that i get lost
chemistry - bobpursley, Saturday, September 20, 2008 at 5:20pm
So let us see that figuring.
- chemistry - jay, Saturday, September 20, 2008 at 5:36pm
  ok the molar mass of C6H1206 IS
  6(12.01)+ 12(1.008)+ 6(16.00) = 180.16
  
  THEN FIND THE MOLE
  n=m/M = 12.6/180.16 = 0.0699
  
  so the number of 0 atoms is
  6 x 0.0699 = 0.4194
  
  I dont know what next
chemistry - DrBob222, Saturday, September 20, 2008 at 6:10pm
ok the molar mass of C6H1206 IS
6(12.01)+ 12(1.008)+ 6(16.00) = 180.16

THEN FIND THE MOLE
n=m/M = 12.6/180.16 = 0.0699

OK to here

so the number of 0 atoms is
6 x 0.0699 = 0.4194
# O atoms is 6 x 0.0699 x 6.022 x 10^23 since there are 6.022 x 10^23 atoms in a mole of atoms.
I dont know what next

Answer this Question

Related Questions

chemistry - Determine the number of moles of a) N atoms in 42.5g of Mg(NO3)2 b) ...
chemistry - Determine the number of moles of N atoms in a sample of C7H5(NO2)3 ...
Chemistry - How many atoms are present in a ...
chemistry - I'm having a little trouble doing a worksheet. 1.25 moles of KBr...
chemistry - Hassium (III)oxalate contains 2.25 mol of Carbon atoms. What is the ...
chemistry - A sample of propane, \rm C_3H_8, contains 12.8 moles of carbon atoms...
Chemistry - Posted by Angeline on Monday, April 20, 2009 at 5:35pm. A few ...
chemistry - how many moles of zinc atoms are need to supply the same number of ...
chemistry - are these right? How many atoms are there in 1.3x10^22 molecules NO2...
chemistry - How many atoms of H are in 6.0 moles of H2O? A. 7.22 x 1024 atoms B...

For Further Reading

First Name:
School Subject:
Answer: