Question

A mixture of krypton and neon gas is compressed from a volume of 96.0L to a volume of 68.0L , while the pressure is held constant at 15.0atm . Calculate the work done on the gas mixture. Be sure your answer has the correct sign (positive or negative) and the correct number of significant digits.

Answer 1

Answer:

-42556.5 J

Explanation:

From gas law,

The work done by gas is given as,

W = PΔV......................... Equation 1

Where W = Work done on the gas mixture, P = Pressure of the gas mixture, ΔV = Change in volume of the gas mixture.

Given: P = 15 atm = (15×101325) N/m² = 1519875 N/m², ΔV = 68-96 = -28 L = -28/1000 = -0.028 m³

Substitute into equation 2

W = 1519875(-0.028)

W = -42556.5 J

Hence the work done by the gas mixture = -42556.5 J