An unknown compound contains only carbon, hydrogen, and oxygen (CxHxOx). Combustion of 3.50G of this compound produced 5.13G of carbon dioxide and 2.10G of water

Question

A.How many moles of carbon, , were in the original sample?

b. How many moles of hydrogen, , were in the original sample?

Answer 1

i got for A) 0.117 mol

Answer 2

5.13 g CO2 x (1 mol CO2/44g) x (1 mol C/1 mol CO2) = ? and I don't believe that is 0.117

2.10g H2O x (1 mol H2O/18) x (2 mol H/1 mol H2O) = ?

Answer 3

thank you