Hannahmiller Hannahmiller 22-01-2017 Chemistry contestada 13. What is the molar mass of (NH4)3PO4? (Use whole number molar masses) *a. 113 gb. 121 gc. 149 gd. 339 g14. What is the mass of oxygen in 300 g of sulfuric acid (H2SO4)? *a. 64 gb. 196 gc. 210 gd. 300 g