Question #29db0

1 Answer
Kai
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

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