Phosphoric acid (H3PO4) is prepared in a two-step process:
(1) P4+5O2→P4O10
(2) P4O10+6H2O→4H3PO4
In step (1), 62 g of phosphorus is made to react with excess oxygen to form P4O10 with 85 % yield. In step (2), the yield of H3PO4 obtained is 90 %. Calculate the mass of H3PO4 produced.