Please asap 1. An ideal gas at 20 °C consists of 2.2 × 10^22 atoms. 3.8 JJ ofthermal energy are removed from the gas. What is the newtemperature in °C?2. 33 g of copper pallets are removed from a 300°C oven andimmediately dropped into 100 mL of water at 21 °C in aninsulated cup.3. a lowest pressure ever obtained in a laboratory setting is 4.0 x10^-11 Pa. At this pressure, how many molecules of air wouldthere be in a 20°Cexperimental chamber with a volume of 0.020 m^3?4. 0.23 mol of argon gas is admitted to an evacuated 20 cm^3container at 20°c. The gas then undergoes an isochoricheating to a temperature of 200°c. what is the final pressure ofthe gas?5. The length of a steel beam increases by 0.72 mm when itstemperature is raised from 22°C to 35°c. What is the length ofthe beam at 22 °C?6. a 2.1 cm thick floor covers a 4.0 m x 5.5 m room. The subflooron which the flooring sits is at a temperature of 16.3 °C, whilethe air in the room is at 19.4 °C. What is the rate of heatconduction through the floor? Use 0.200 W/m * K for thethermal conductivity of wood.

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1. An ideal gas at 20 °C consists of 2.2 x 10^22 atoms. 3.8 JJ of thermal energy are removed from the gas. What is the new temperature in °C?

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter10: Thermal Physics

Section: Chapter Questions

Problem 7WUE: One way to cool a gas is to let it expand. When a certain gas under a pressure of 5.00 106 Ha at...

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One way to cool a gas is to let it expand. When a certain gas under a pressure of 5.00 106 Ha at 25.0C is allowed to expand to 3.00 times its original volume, its final pressure is 1.07 106 Pa. (a) What is the initial temperature of the gas in Kelvin? (b) What is the final temperature of the system? (See Section 10.4.)
Q7. An ideal gas is kept inside a closed container at a temperature of 40 K and a pressure of 0.00024 atm. If the container is slowly heated with the help of a burner till the temperature inside the container reaches to 100 K, then the pressure inside the container becomes: O 0.0006 atm. 0.00048 atm. O 0.001 atm. O 0.0004 atm. 0.00001 atm.
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1. Two moles of helium gas are placed in a cylindrical container with a piston. The gas is at room temperature 30 °C and under a pressure of 2.9.105 Pa. When the pressure from the outside is decreased, while keeping the temperature the same as the room temperature, the volume of the gas doubles. Use that the gas constant R = 8.31 J/(mol K). Think: What kind of process is this? Isobaric, isothermal, adiabatic, isochoric or non-quasi- static? (a) Find the work the external agent does on the gas in the Wext agent = Q= (b) Find the heat exchanged by the gas and indicate whether the gas takes in or gives up heat. Assume ideal gas behavior. ✓ process. Q is realeased by gas O Q is absorbed by the gas