J.R. S. answered 04/29/20
Ph.D. University Professor with 10+ years Tutoring Experience
Molar mass H2O = 18 g/mol
Avogadro's number = 6.02x1023 molecules/mole
Using dimensional analysis:
22 g H2O x 1 mol H2O/18 x 6.02x1023 molecules of H2O/mol = 7.4x1023 molecules (2 significant figures)

J.R. S.
04/29/20
Melissa H.
Which this means that 7.4x10^23 would be the answer?04/29/20