Question

In the following reaction, how many grams of benzene (C6H6) will produce 42 grams of CO2?
2C6H6 + 15O2 → 12CO2 + 6H2O
The molar mass of benzene is 78.1074 grams and that of CO2 is 44.01 grams.

Answer 1

Unitary method is the answer.
2 mol benzene makes 12 of CO2. Or we can say 12 is made by 2 of benzene. Then 42/44.1 are made by 12/2 * 42/44.1 if benzene. Which are equal to x/78.1074 mol.