Question

An unknown compound contains only carbon, hydrogen, and oxygen (CxHyOz). Combustion of 3.00 g of this compound produced 4.40 g of carbon dioxide and 1.80 g of water. How many moles of carbon, C, were in the original sample?

Answer 1

Answer;

0.100 moles

Explanation;

1 mole of CO2 = 44 g

1 mole of CO2 = 12 g of Carbon

Mass of carbon in the original sample;

= (4.4 × 12)/44

= 1.2 g

Moles of carbon = 1.2 /12

= 0.100 Moles

Moles C in the original sample = 0.100