Practice_4 - Practice 4 (chapter 19-chapter 22) 1.

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1. A child has a temperature of 104 ° F. What is the temperature in degrees kelvin? a. 40 b. 406 c. 401 d. 313 e. 349 2. A bridge is made with segments of concrete 50 m long. If the linear expansion coefficient  is 12  ×  10 –6  (°C) –1 , how much spacing (in cm) is needed to allow for expansion during an  extreme temperature change of 150°F? a. 10 b. 2.5 c. 7.5 d. 5.0 e. 9.5 3. An auditorium has a volume of 6  ×  10 3  m 3 . How many molecules of air are needed to fill  the auditorium at STP? a.  1.6  ×  10 29 b.  1.6  ×  10 27 c.  1.6  ×  10 25 d.  1.6  ×  10 23 e.  1.6  ×  10 20 4. A 5-kg piece of lead (specific heat 0.03 cal/g   °C) having a temperature of 80°C is  added to 500 g of water having a temperature of 20°C. What is the final equilibrium  temperature (in °C) of the system? a.
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Practice_4 - Practice 4 (chapter 19-chapter 22) 1.

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