Question

The mass of 0.250 mol of H2O is:

Answer 1

Answer:

n=mass/molecular weight

Explanation:

so therefore for 0.250 moles of water, you have to multiply molecular weight with the amount of moles. so: 0.250.mw=mass

the molecular weight of water is 18.01 (o=16(approx), h=1(approx), 2h+o=18.01)

so 0.250 * 18.01= 4.5025 hence 4.5 grams of water.