Calculate the mass percent composition of carbon in each the following carbon compounds.

Question

a) C_4H_10

b) C_6H_10

c) CCl_2F_2

d) C_8H_13O_5N

Answer 1

find the mass of carbon and the mass of the carbon compound

mass percent composition of carbon
= mass of carbon/ mass of carbon compound
x 100%

for example:
for a)
mass of carbon=4(12)
mass of carbon compound=4(12)+10(1)
48/58 x 100%