How many moles of n2 are in a flask with a volume of 250ml at a pressure of 300.0 kpa and a temp of 300.0 k

Answer : The number of moles of are, 0.03 mole

Solution :

Using ideal gas equation,

where,

P = pressure of the gas = 300 kpa = 2.96 atm

conversion : 1 atm = 101.325 kpa

V = volume of the gas = 250 ml  = 0.250 L

conversion : 1 L = 1000 ml

T = temperature of the gas = 300 K

R = universal gas constant = 0.0821 Latm/moleK

n = number of moles of gas

Now put all the given values in the above formula, we get the number of moles of gas.

Therefore, the number of moles of are, 0.03 mole

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