Question

A snowflake contains 2.0 10^18 molecules of water. How many moles of water does it contain?

mol

Answer 1

3.32x10-6 moles occupy 2.0 10^18 molecules of water.

Step-by-step explanation:

1 mol of anything occupies 6.02x10^23 (NA) particles.

Let's make a rule of three:

6.02x10^23 molecules are contained in 1 mol

2x10^18 occupy (2x10^18 / 6.02x10^23) = 3.32x10-6 moles