Question

How many oxygen atoms are in 15.0 grams of Magnesium phosphate?

Answer 1

8 atoms of oxygen.

Step-by-step explanation:

Given parameter:

Mass of magnesium phosphate = 15g

Unknown:

Number of oxygen atoms = ?

Solution:

The formula of the compound is;

Mg₃(PO₄)₂;

Number of atoms oxygen = 2(4) = 8 atoms of oxygen.