Answer:- 1.90 atm
Solution:- It is based on combined gas law equation, PV = nRT
In this equation, P is pressure, V is volume, n is moles of gas, R is universal gas constant and T is kelvin temperature.
If we divide both sides by V then:
[tex]P=\frac{nRT}{V}[/tex]
We know that, molarity is moles per liter. So, in the above equation we could replace [tex]\frac{n}{V}[/tex] by molarity, M of the gas. The equation becomes:
P = MRT
T = 20 + 273 = 293 K
M = [tex]7.9*10^-^2[/tex]
Let's plug in the values in the equation:
P = [tex](7.9*10^-^2)(0.0821)(293)[/tex]
P = 1.90 atm
So, the pressure of the gas is 1.90 atm.
