Question

What is the weight of the oxygen element in 10 moles of pure water?

Answer 1

`160g`

Explanation:

Weight of `1` mole of pure `H_2O=18g`

Weight of `O` atoms in `1` mole of pure `H_2O=16g`

`:.` Weight of `O` atoms in `10` moles of pure `H_2O=10xx16g=160g`