1 mole of strontium phosphite contains...

Question

1. How many strontium ions?

 

2. How many phosphite ions?

 

3. How many oxygen atoms?

 

Please show work so I know what you did, thank you

Answer 1

Assuming the correct formula is Sr₃(PO₃)₂, find how many of each species is present in the formula, and multiply by Avogadro's number (6.02 x 10²³), since you have 1 mole.

 

Strontium:  (3)(6.02 x 10²³) = 1.806 x 10²⁴

 

Phosphite:  (2)(6.02 x 10²³) = 1.204 x 10²⁴

 

Oxygen:  (2)(3)(6.02 x 10²³) = 3.612 x 10²⁴