Question

Determine the number of moles in 254 molecules of bromine.

Answer 1

4.22 × 10 ⁻²² mol

Step-by-step explanation:

Given data:

Number of molecules of bromine = 254 molecules

Number of moles = ?

Solution:

1 mole = 6.02 × 10 ²³ molecules

254 molecules × 1 mol / 6.02 × 10 ²³ molecules

42.2 × 10 ⁻²³ mol

4.22 × 10 ⁻²² mol