Mass of Gas Ejected: 1.25kg - Is it Reasonable?

[Bolter]

Homework Statement

Work out the mass of gas released from cylinder

Relevant Equations

PV = nRT

This is the problem below that I have tried doing

I ended up getting the mass of gas ejected to be 1.25kg from doing the following

Would you say this is a reasonable value to get

Thanks in advance!

 

[gneill]

It looks reasonable to me.