What mass of CO2 forms when 5.00 g of CH4 burns completely?

Solution

Chemistry · Medium

Problem

What mass of CO2 forms when 5.00 g of CH4 burns completely?

Use the combustion equation: CH4 + 2O2 -> CO2 + 2H2O.
The mole ratio CH4:CO2 is 1:1.
moles CH4 = 5.00 g CH4 / 16.04 g/mol = 0.3117 mol CH4
moles CO2 = 0.3117 mol CO2
mass CO2 = 0.3117 mol * 44.01 g/mol = 13.7 g CO2.

Result

13.7 g CO2