Chapter 17, Problem 108QAP

Interpretation Introduction

Interpretation:

To calculate the required time taken for the fuel cell before the hydrogen runs out.

Concept introduction:

Use gas law equation to calculate moles of ${\text{H}}_{\text{2}}$ as follows:

$PV=nRT$

Here, P represents pressure, V represents volume, n represents moles, R and T represents gas constant and temperature respectively.

From faradays first law

$\text{moles}=\frac{I\times t}{nF}$

Here, I represents current, t represents time, F faradays constant and n represents number of electrons.