Question

If I have 80 L of H2 how many moles of H2 do I have? (H- 1.01 g/mol) Only number do not give units.

Answer 1

Assuming that it is at STP (Standard Temperature and Pressure), in these conditions, 1 mol of gas is equal to 22.4 Liters of volume, therefore if we have 80 Liters of H2 gas:

22.4 L = 1 mol

80 L = x moles

x = 3.6 moles of H2 gas