How many molecules are in 5.35 moles of H_2OH2O?

1 Answer
Apr 20, 2016

3.22×10^243.22×1024 molecules H_2OH2O

Explanation:

Avogadro's number states that every mole has
6.022⋅10^236.0221023 atoms (or molecules, depending on the substance).

So to figure this out you have to assume that 1 mol H_2O = 6.022×10^231molH2O=6.022×1023

So set up a conversion.

5.35mol5.35mol H_2OH2O (6.022×10^236.022×1023 molecules / 1 molmol)
1 Mol1Mol cancels out with mol H_2OmolH2O.

5.35×6.022×10^23=3.22×10^245.35×6.022×1023=3.22×1024 molecules of H_2OH2O