Question #29db0

1 Answer
Jan 16, 2018

The pressure in atmospheres is 2 atm.

Explanation:

Any mole of gas at STP (standard temperature and pressure, 0^@C and 1 atm) occupies 22.4 L of volume.

So when there are 2 moles at the sample volume and temperature, the pressure increases to 2 atm.

You can also do this using the ideal gas law.

PV = nRT, where P is pressure in atm, V is volume in liters, n is amount moles, R is the ideal gas constant, 0.08206, and T is temperature in kelvins.
0^@C + 273 = 273K
P(22.4) = (2)(0.08206)(273)
P(22.4) = 44.80476
P ~~ 2 atm