Question

What mass of water, `H_2O`, can be produced from 150 grams of ammonia, `NH_3`?

Answer 1

238 g

Explanation:

`NH_3+3/4O_2 =1/2N_2+3/2H_2O`

As guided by the above equation, we see 1 mole `"NH"_3` produces 1.5 moles of water.

Hence `"150 g NH"_3 =150/17 "mol NH"_3` produces `150/17*1.5` moles `"H"_2"O"` which will have a mass `150/17*1.5 × "molar mass of H"_2"O"`

`=150/17*1.5*18=238`