Question

What mass of carbon dioxide results from complete combustion of a `32.0*g` mass of methane?

Answer 1

`88.0*g` with respect to carbon dioxide...........

Explanation:

We interrogate the stoichiometric reaction:

`CH_4(g) + 2O_2(g) rarr CO_2(g) + 2H_2O(l)`

And this tells us UNEQUIVOCALLY that `16*g` of methane gas reacts with `64*g` of dioxygen, to give `44*g` of carbon dioxide, and `36*g` water.......

As with any reaction, mass and charge are CONSERVED.

And given `32.0*g` of methane reacts with `128*g` dioxygen, stoichiometry requires that `88*g` carbon dioxide will be evolved. How much water?