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D. 36 J II.Directions: Read each item carefully. Choose the letter of the best answer and write it in your notebook/on a separate sheet of paper. 1. The internal energy of a system is initially 35 J. The system does 34 J of work. What is the system's final internal energy when a total of 46 J of energy is added to the system as heat? A. 47J B.26 J C. 37 J 2. While gas does 400J of work on its surroundings, 900J of heat is added to the gas. What is the change in the internal energy of the gas? A 500 B.400J C. 900J D.300J 3. If 500 calories of heat are added to a gas, and the gas expands doing 500J of work on its surroundings, what is the change in the internal energy of the gas? A. 1555J B. 5915 C. 5159J D.1595J For numbers 4-5, consider this situation: А beaker containing 400g of water has 1200) of work done on it by stirring and 200cal of heat added to it from a hot plate. 4.The change in the internal energy of the water in joules is ? A.2038 ) B.3028 J C.2308 J D.3820J 5. Determine the change in the internal energy of the water in calories? A. 684 calories B.486 calories C.648 calories D.846 calories 6.An ideal gas is compressed without allowing any heat to flow into or out of the ga What will happen to the temperature of the gas in this process? A. The temperature decreases since heat flows during the process. B. The temperature increases since no heat flows during the process. C. The temperature remains the same since heat flows in and out durir process. D. The temperature could not be determined since heat is absorbed dur process.
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