Answer:
The correct answer is
M = 44.1 g / mol
Step-by-step explanation:
Hello!
Let's solve this!
First we write down the data
d: 1.97 g / L
P: 1 atm
R: 0.082 atmL / Kmol
T: 273K
From the ideal gas formula:
d = P * M / R * T
We cleared M to know the molar mass.
M = (d * R * T) / P
M = (1.97 g / L * 0.082 atmL / Kmol * 273K) / 1atm
The correct answer is
M = 44.1 g / mol