How many moles are contained in 2.0 L of N2 at standard temperature and pressure.

0.091 moles are contained in 2.0 L of N2 at standard temperature and pressure.

Explanation:

Data given:

volume of the nitrogen gas = 2 litres

Standard temperature = 273 K

Standard pressure = 1 atm

number of moles =?

R (gas constant) = 0.08201 L atm/mole K

Assuming nitrogen to be an ideal gas at STP, we will use Ideal Gas law

PV = nRT

rearranging the  equation to calculate number of moles:

PV = nRT

n =

putting the values in the equation:

n =

n = 0.091 moles

0.091 moles of nitrogen gas is contained in a container at STP.

the answer is 303.15 or 303