What mass of H3PO4 is needed to produce 4.1 moles of H2

Question

What mass of H3PO4 is needed to produce 4.1 moles of H2

Answer 1

You can get 3 moles of H2 from 2 moles of H3PO4

Use this ratio to solve your problem.

4.1 mol H2 x 2 mol H3PO4/3 mol H2 x molar mass H3PO4 = mass H3PO4