Use the molar volume of a gas at STP to calculate the density (in g/L) of nitrogen gas at STP.
The molar volume of a gas at STP is 22.4 L/mol. The molar mass of nitrogen gas (N2) is 28.02 g/mol.
To calculate the density of nitrogen gas at STP, we first need to calculate the number of moles of nitrogen gas in a volume of 22.4 L:
Number of moles = volume / molar volume
Number of moles = 22.4 L / 22.4 L/mol = 1 mol
Next, we calculate the mass of nitrogen gas in 1 mole:
Mass = number of moles x molar mass
Mass = 1 mol x 28.02 g/mol = 28.02 g
Now that we have the mass and volume of nitrogen gas, we can calculate the density:
Density = mass / volume
Density = 28.02 g / 22.4 L = 1.25 g/L
Therefore, the density of nitrogen gas at STP is 1.25 g/L.