# Quiz2 A - the temperature(The thermal conductivity of water...

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Exam Temperature, heat and gases. Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A thermometer flashes the temperature in Celsius and Fahrenheit along with the time. If it flashes 19° F, what will the thermometer flash in Celsius? A)10.6° C B) - 21.4° C C)66.2° C D) - 7.2° C 2) A constant - volume gas thermometer has a pressure of 64.23 Pa at the triple point of water. What is the change of pressure that occurs for each one degree Kelvin change of temperature? 3) 169.0 g of water is heated using 60.0 W of power, with perfect efficiency. How long will it take to raise the temperature of the water from 15° C to 25° C? 4) A thin layer of water .50 cm thick covers a 1.0 - m 2 area on the ground. The bottom of the water is 42° C and the surface is held at a constant temperature of 11° C. The only source of heat is sunlight passing through the water that heats the ground below it. Find the rate of flow of energy from the sunlight needed to maintain

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Unformatted text preview: the temperature. (The thermal conductivity of water is 0.61 W/m Â· K.) A) 37.82 W B) 3782 W C)-3,782 W D) 10164 W 5) An ideal gas is in a closed container. If its pressure is 141 Pa initially, and its temperature is 20.0Â° C, what is its pressure after its temperature is raised to 60.0Â° C? A) 128 Pa B) 423 Pa C) 47 Pa D) 160 Pa 6) At what temperature would the average thermal speed of oxygen molecules be 17.0 m/s? Oxygen is assumed to approximate an ideal gas. The mass of one O 2 molecule is 5.312 x 10-26 kg. A) 3080 K B) 9250 K C) 2.23 X 10 23 K D) 0.371 K 7) The van der Waals equation for a gas corrects for the van der Waals force and for what other property of real gases? A) inelastic collisions between the molecules B) finite size of the molecules C) attraction between the molecules D) compressibility of the gases 1 Answer Key Testname: QUIZ2 1) D 2) B 3) B 4) B 5) D 6) D 7) B 2...
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