Question

Calculate the amount of h2o produced by the combustion of 3.2 gram of methane

Answer 1

Explanation:

write balanced reaction

CH4 + 2O2 gives CO2 + 2H20

From eqn

1 mole of CH4 gives 2 mole of water

i.e 16g of CH4 gives 36g of H20

3.2g of CH4 gives x

Crossmultiplying

x*16 = 36*3.2

x= 7.2g of water