Thread: Chem Help
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09-04-2012   #1 (permalink)
evilxshadow
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Default Chem Help

Sorry to post again, but i need help. This teacher is really hard and its not even AP chemistry.... These are just quizzes which we have every day online and always at least 1 question that barely anyone in class knows how to do.

also if possible, ima stick using this thread for help becuz i'll really need it



1) Vitamin C (mm=176.12 amu) contains C, H, and O. When 1.000g of vitamin C is placed in a combustion chamber and burned, the following data are obtained:
Mass of carbon dioxide absorber after combustion = 85.350g
Mass of carbon dioxide absorber before combustion = 83.850g
Mass of water absorber after combustion = 37.960g
Mass of water absorber before combustion = 37.550g
What is the molecular formula of vitamin C?