Question

Water is separated into oxygen gas (o2) and hydrogen gas (h2) using a process called electrolysis. after electrolysis, 0.15 moles of hydrogen gas are collected at stp. what is the volume of 0.15 moles of hydrogen gas obtained at stp?

Answer 1

Volume of 1 mole of any gas under STP = 22.4 L,
so
0.15 mol*22.4 L/1 mol = 3.36 L of H2