Answer:
1) 3
Explanation:
Because Hydrogen mass 1 and there is 3 Hydrogen so you times it 3 time and Hydrogen is the mass of solute then for the mass of solution is the mass of H3PO4 which is 97 then you divide 3 by 97 and times it 100% and then you would get 3.0928 so which is choice (1) 3
