Question

Question #575a0

Answer 1

We can use the Ideal Gas Law, `PV=nRT`. Rearranging, `n/V=P/(RT)=112.6/(0.082xx293)=4.7`.

This answer is in `mol L^-1`, and each mole of `H_2` is `2` `g`, so the final answer is `9.4` `gL^-1`.

Explanation:

Conversions:

`20^oC=293` `K`

`1655` psi = `112.6` atm

Constant:

0.082 `L atm K^-1 mol^-1`