Question

`3*10^22` atoms of water is equivalent to how many grams?

Answer 1

`0.897` grams of water

Explanation:

Begin by converting the atoms to moles using Avogadro's number of `6.02x10^23`

`3x10^22cancel(atms)x (1mol)/(6.02x10^23cancel(atms)) = 0.0498 mol`

Nox convert the moles to grams using the molar mass of water `18.01 g/(mol)`

`0.0498 cancel(mol) x ((18.01 g)/(1 cancel(mol))) = 0.897 grams`