How many moles of h2 gas would be contained in 4.00 of the gas at 202.6KPa and 127c?

Answer : The volume of one mole of gas is dependent of temperature and pressure.

Explanation:

At 0o Cand1atm one mole of an ideal gas would be ≈22.4L, which is the same as 22.4d m3

If you double the pressure, the same amount (mole) of gas would take up only half the space.

If the temperature changes (and pressure stays constant), the gas will expand or contract by about 1% / 3o.