## anonymous one year ago How many moles of H2 would be contained in 4.0 L of the gas at 202.6 kPa and 127°C? A. 89.6 mol B. 6.38 mol C. 0.24 mol D. 0.77 mol

1. taramgrant0543664

You're going to have to use the formula PV=nRT P is the pressure V is your volume n is the number of moles R is the ideal gas constant T is your temperature

2. taramgrant0543664

The Pressure would have to be in atmospheres in order to use 0.0821 as your R value and your temperature has to be in Kelvin instead of celcius

3. taramgrant0543664

202.6kPa is equal to 2.0atm so thats your pressure that you can use in the formula 127+273=400K so you can use 400K as your temperature

4. taramgrant0543664

P=2.0atm V=4.0L n=unknown R=0.0821L-atm/mole-K T=400K Put them into the formula to solve for n

5. Photon336

$\frac{ pV }{ RT } = n$