How many molecules are in a sample of water, H2O, which has a mass of 50.0 g?

How many molecules are in a sample of water, H2O, which has a mass of 50.0 g?
A)1.67 x 1024 molecules
B)5.42 x 1026 molecules
C)2.16 x 1023 molecules
D)3.01 x 1025 molecules
E)8.30 x 10-23 molecules


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