Determine the Number of Molecules in a Drop of Water

Determine the number of molecules in a drop of water that has a mass of 0.050 g.

A) 6.50 × 10²⁶ molecules
B) 5.02 × 10²¹ molecules
C) 5.42 × 10²³ molecules
D) 2.17 × 10²⁶ molecules
E) 1.67 × 10²¹ molecules