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2_prelab_hints - Heat and Thermodynamics Prelab 1...

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Heat and Thermodynamics Prelab 1 Temperature and Pressure The pressure in a container of fixed volume V is 20 psi when the temperature is 20 C. What is the pressure when the temperature is 0 C? What is the pressure when the temperature is 100 C? 1.1 Equations The ideal gas law states that PV = nRT where P is the pressure in the container of volume V , the volume contains n moles of an ideal gas, R is the universal gas constant, and T is the temperature in kelvin . What is the relationship between a temperature expressed in kelvin and a temperature expressed in Celcius degrees? 1.2 Room Temperature Let us call the known temperature and pressure P 1 and T 1 . P 1 = 20 psi The temperature T 1 is given in Celcius degrees; you need to write it in kelvin. The container is of fixed volume V . You should assume the container is closed and no gas is flowing into or out of it. The number of moles n of the gas is therefore constant. The universal gas constant R will not change, either.
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