Question

1) Suppose that a woman weighing 150 lbs and wearing high-heeled shoes momentarily places all her weight on the heel of one foot.

a) If the area of the heel is 0.55 in2, calculate the pressure exerted on the underlying surface in pounds per square inch.

Express the answer in pounds per square inch to two significant figures.

2) A sample of gas (24.2 g) initially at 2.00 atm was compressed from 8.00 L to 2.00 L at constant temperature. After the compression, the gas pressure was ________ atm.

3) A sample of an ideal gas (3.00 L) in a closed container at 25.0 °C and 76.0 torr is heated to 290 °C. The pressure of the gas at this temperature is ________ torr.

4)A helium balloon is filled to a volume of 36.7 L at 305 K. What will the volume of the balloon become if the balloon is heated to raise the temperature to 387 K?

5)At a temperature of ________ °C, 0.444 mol of CO gas occupies 11.8 L at 875 torr.