What temperature does a 0.25 l cylinder containing 0.10 mol of helium gas need to be cooled in order for the pressure to be 253.25 kpa? (given: r = 8.314 l∙kpa/k∙mol

The gas needs to be cooled down to 76.15 K

Explanation:

To calculate the temperature of the gas, we use the equation given by ideal gas, which is:

where,

P = Pressure of the gas = 253.25 kPa

V = Volume of the gas = 0.25 L

n = Number of moles of gas = 0.10 mol

R = Gas constant =

T = Temperature of the gas = ? K

Putting values in above equation, we get:

Hence, the gas needs to be cooled down to 76.15 K

it's all four options.