The molar mass of 18.12 g of gas exerts a pressure of 3.05 atm on the walls of a 5.85 L container at 280 K is 23.3 g/mole.
What is the molar mass?
Molar mass is the concentration of a substance that is present in a specific liquid. It is also called the concentration of a substance.
The molar mass can be calculated by the formula of an ideal gas:
PV = nRT
P is the pressure
V is the volume
n is the number of moles
R is the constant of gas.
T is the temperature.
The given amounts are the molar mass of 18.12 g.
The pressure is 3.05 atm.
The volume is 5.85 L
The temperature is 280 K
Putting the value in the equation
n = PV/RT = (3.05) (5.85) / (0.0821) (280) = 0.777 moles of gas
Molar mass = 18.12 g/0.777 moles = 23.3 g/mole
Thus, the Molar mass is 23.3 g/mole.
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