Calculate the density of argon gas at STP.

Question

Quizplus · Accepted Answer

According to the definition of STP, the temperature is 0°C or 273.15 K and pressure is 1 atm. The molar volume of an ideal gas at STP is 22.4 L/mol. The molar mass of argon is 39.95 g/mol. Therefore, the density of argon gas at STP can be calculated as follows:

density = (molar mass)/molar volume
density = 39.95 g/mol / 22.4 L/mol
density = 1.78 g/L

Therefore, the correct choice is C, with a density of 1.78 g/L.

Calculate the Density of Argon Gas at STP