Grade 11 Chemistry Help?

V

Via

New member
ok, Im doing practice questions for my exam and this question is really bugging me. No matter what I do I dont get the answer in the back of the book, so I want to check if it's wrong.
Please try this question and tell me what answer you get so I can see if mine is right.
Calculate the concentration (in mol/L) of 7.37 g of C12 H22 O11, dissolved in 125 mL of solution.
 
Firstly calculate the no of mole of C12H22O11:
Molar mass of C12H22O11 = 342 g/mol
No of mole of C12H22O11 = 7.37g / 372g/mol = 0.0198 mole
So the concentration is 0.0198 mole / 0.125 L.
But the question want you to find how many moles are there in 1 L.
So times the concentration by 8 (both side must times):
(0.0198 x 8)mole / (0.125 x 8)L = 0.1585 mole/litre
 
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