Question

What mass of carbon is in a 245 g quantity of carbon dioxide (CO2)?
A.3.75 g C
B.66.8 g C
C.81.7 g C
D.1980 g C

Answer 1

m(C) = m(CO2) * [Ar(C)/M(CO2)] = ???

Answer 2

B 66.8 g C

Answer 3

The molecular weight of CO2 is about 44 g/mol. Assume you have 1 mol of CO2. Therefore, there are 12 g C per 44 g CO2 (1 mol CO2). 12/44*245=66.8 g C