PROBLEM 64P

What is the pressure in millimeters of mercury of 0.0115 mol of helium gas with a volume of 214 mL at 45 °C?

PROBLEM 64P

What is the pressure in millimeters of mercury of 0.0115 mol of helium gas with a volume of 214 mL at 45 °C?

Solution 64P:

Here, we need to calculate the pressure of helium gas in the cylinder.

Step1: We now,

From the ideal gas equation

------(1)

Step 2:

Given that

n =0.0115 mol

Conversion from psi to atm

1 atm = 14.69psi

T = 45 °C=45 + 273 = 318 K

V = 214 mL = 0.214 L

R= 0.08206 L atm K-1mol-1

P =?