This is a practical question. A balloon is to be filled with He gas. I know the volume of the balloon. That means I know the mass or number of moles of He gas that is needed. Question is, if a given small canister (volume ~ 150 ml) made out of aluminum can hold this gas. I am thinking of using P*V = n*R*T . Every quantity is know except P. So I can find a value for P. How do I go about finding if this canister will withstand this pressure? What are the factors that need to be considered? I think the thickness of the wall, and the material the canister is made of are two factors. But are there any data available to exactly know if the given canister is right for this job? Thanks.