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1. [-I1 Points] WAUNIPHYSAV1 19.P.002. ASK YOUR TEACHER PRACTICE ANOTHER (a) How much work do you do in one stroke if the average gauge pressure is 2.40 x 105 N/m2 (about 35 psi)? (You may consider this an isothermal process. Only consider the stroke that compresses the pump.) J A hand-driven tire pump has a 2.96-cm diameter piston and a maximum stroke of 17.2 cm. (b) What average force do you exert on the piston, neglecting friction and gravity? N Submit Answer 2. [/1 Points] WAUNIPHYSAV1 19.P.009. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The ideal gas law is a good approximation in most cases, but some applications may call for a more precise model of the relationship between the pressure, volume, and temperature of a gas. For a certain amount of a particular non-ideal gas, over a certain temperature range, this relationship is given by the equation PV = (5.59 x 10-3 J/K1)T2 + (15.6 J/K)T, The temperature of this sample of gas is decreased from 55.0C to 45.0"C. Determine the work done at constant pressure on the gas during this temperature change. I:J 3. [-/1 Points] WAUNIPHYSAV1 19.P.006. ASK YOUR TEACHER PRACI'ICE ANOTHER In the graph below, each unit on the horizontal axis is 1.70 x 10'3 m3 and each unit on the vertical axis is 0300 atm. P V (a) Determine the change in internal energy of the gas if 2302 J of heat is added as it expands in volume along the direct path CA. J (b) To get the same change in internal energy, how much heat must be added to the gas as it goes along the path CBA? J 5. [-I1 Points] WAUNIPHYSAV1 19.P.014. ASKYOUR TEACHER PRACTICE ANOTHER A certain monatomic gas inside a cylinder is at a temperature of 22C. It takes 653 J of work done on the gas to compress it and increase the temperature to 145C. If there are originally 6.4 moles of gas inside the cylinder, calculate the quantity of heat owing into or out of the gas. (Indicate the direction with the sign of your answer. Let heat flowing into the gas be positive, and heat owing out of the gas be negative.) Eu 6. [-I1 Points] WAUNIPHYSAV'I 19.P.015. ASK YOUR TEACHER PRACTICE ANOTHER (a) If the temperature of the gas is increased to 475 K at constant volume, how much heat was transferred to the gas? The molar specic heat capacity of water vapor at constant volume is 27.0 J/mol. J 2.60 moles of water vapor gas at 252 K are kept in a container. (b) What is the change in internal energy of the gas due to this change in temperature at constant volume? J U (c) Suppose the temperature of the gas is increased from 252 K to 475 K at constant pressure, how much heat is transferred to the gas? The molar specic heat capacity of water vapor at constant pressure is 35.4 J/mol. U (d) How much work is done on the gas as its temperature increases at constant pressure? J 7. [-/1 Points] DETAILS WAUNIPHYSAV1 19.P.017. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER An ideal diatomic gas undergoes an adiabatic compression during which time its volume changes from VA = 1400 cm to VB = 420 cms. If its initial temperature is TA = 37.0 C, what is the final temperature TB of the gas? .C 8. [-/1 Points] DETAILS WAUNIPHYSAV1 19.P.021. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A monatomic gas at a pressure of 3.00 atm is compressed adiabatically. What is the compressibility k of the gas, given that Ov = -KV? atm - 1 9. [-/1 Points] DETAILS WAUNIPHYSAV1 19.P.022. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The initial pressure and volume of a diatomic gas (y = 1.40) immediately after combustion inside an automobile engine are 2.93 x 106 Pa and 5.78 x 10-5 m respectively. In the next step of the cycle, the piston moves outward allowing the gas to expand until its final volume is 2.85 x 10-4 ms. Note that during this expansion, there is no energy transfer. Determine the work done during the expansion of the gas