A beaker containing 6.32 moles of PBr3, contains___ molecules of PBrz.

A) 1712.7
B) 3.1 x 10^24
C) 3.8 x 10^24
D) 271

3.8 x 10²⁴molecules

Explanation:

Given parameters:

Number of moles  = 6.32moles

Unknown:

Number of molecules  = ?

Solution:

The number of moles can be used to derive the number of molecules found within a substance.

Now,

       1 mole of substance contains 6.02 x 10²³ molecules

     6.32 mole of PBr₃ will contain 6.32 x 6.02 x 10²³ = 3.8 x 10²⁴molecules