Show by means of calculations that 5 moles of CO2 and 5 moles of H2O do not have the same mass. How much is the difference in their masses?
One mole of CO2 weighs (12+2×16)g = 44g
5 moles of CO2 weighs 5×44g = 220g
One mole of H2O weighs (1×2+16)g = 18g
5 moles of H2O weighs 5×18g = 90g
Hence from above calculation, it can be concluded that there is a difference of 130 g between 5 moles of CO2 and 5 moles of H2O.