Approximately how many water molecules are in a lake with a volume of 12 100 km3? A water molecule measures approximately 2.75 × 10¯10 m in length.

Approximately how many water molecules are in a lake with a volume of 12 100 km3? A water molecule measures approximately 2.75 × 10¯10 m in length.

A. 2E+15

B. 5E+22

C. 4E+14

D. 6E+41

The answer is :

D. 6E+41