A Sample of Water Has a Mass of 10 $\times$ 10²³
B) 2

Multiple Choice

A sample of water has a mass of 10.0 grams.What is the number of molecules of water in the 10.0 gram sample (H = 1u,O = 16u) ?

A) 1.99 $\times$ 10²³
B) 2.00 $\times$ 10²³
C) 2.56 $\times$ 10²³
D) 3.34 $\times$ 10²³
E) 4.25 $\times$ 10²³