Ideal Gas Law….?

[coleman_fisher]

Hi

I am working with an inert atmosphere tube furnace that uses hydrogen gas.
There is a constant flow rate of hydrogen and I am wondering how to calculate how long a cylinder of hydrogen will last.

Cylinder= 100 Liters
Flow rate= 20 cubic feet / hour
Temperature in furnace= 1300 C

Is this all of the information I need to calculate how long the cylinder of gas will last flowing at 20 cubic feet per hour?
I appreciate the help

[Hudson]

you need the volume and pressure in the cylinder.

Is the H2 burnt off at ambient pressure? Use the PV ratio for your approximation.