Question

3. What is the volume of a balloon if it contains 3.2 moles of helium at a temperature25.0°C and 1.0 atm?

Answer 1

In this question, we have to use the Ideal gas Law formula in order to find the missing volume, for this formula we have:

PV = nRT

We have:

P = 1.0 atm

V = ?

n = 3.2 moles

R is the gas constant = 0.082

T = 25°C, but we need it in Kelvin, 298 K

Now adding these values into the formula:

1 * V = 3.2 * 0.082 * 298

V = 78.2 Liters of Volume