Question: If 16g of ch4 is burnt then find the mass of CO2 produced. The answer comes out to be 44g but according to gay lussac's law since both of them have 1 mole so their their mass should be same so how come it's different?
Different substances have different mass in one mole.
For CH4 one mole is equal to 16g.
For CO2 one mole is equal to 44g
Molecular weight measure in gram will be one mole
CH4+2O2 > CO2+2H2O
From this reaction we can understand that one mole of CH4 giving one mole of CO2.