An hydrocarbon with a #0.66*g# mass was completely combusted to give a #1.32*g# mass of carbon dioxide, and a #2.70*g# of water. How do these data support the idea of the conservation of mass?
Compare the mass of carbon and hydrogen PRIOR to, and AFTER the combustion. Is mass conserved?
If there were
Likewise there were
Now we added oxygen to the combustiion, but we did not add further carbon and hydrogen. The mass of