Thermochemistry quiz #1
Chapter 6
	West Virginia University Dr. Robert Belford

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Question 1 Assuming no heat loss to the environment, calculate the Energy in calories done on a ballon as it expands from 1.0 L to 10.0 L at a constant external pressure of 720 torr. Note; 1 atm-L = 101.3 Joule. (A)  206cal (B)  -206cal (C)  3.58kca (D)  -3.58kcal   Hint Your response Not answered yet

Question 2 Calculate the energy change of a ballon if it is compressed from 2.00L to 0.0200L at a constant external pressure of 1.00 atm and releases 08.5J of heat to the environment. (A)  2.65J (B)  -2.65 (C)  -19.1J (D)  192J   Hint Your response Not answered yet

Question 3 Calculate the energy change of a 30.1 g piece of iron if it is cooled from 400. oC to 25 oC? The specific heat capacity of iron is 0.4513 J/g.o. (A)  5.09kJ (B)  -5.09kJ (C)  25.0kJ (D)  -25.0kJ   Hint Your response Not answered yet

Question 4 What would be the final temperature of 100. ml of water at 25 deg C if it absorbed 5.09 kJ of heat. Assume the density of water is constant at 1g/mL. (A)  12 oC (B)  37 oC (C)  13oC (D)  100 oC   Hint Your response Not answered yet

Question 5 What is the specific heat capacity of a material if it takes 1.508 Kcal to raise 25.0 g of the material from 20.0 to 300.0oC? (A)  0.9017 j/g.oC (B)  .1078 .oC (C)  .2154.oC (D)  0.0564.oC   Hint Your response Not answered yet

Question 6 What is the specific heat capacity of an unknown metal object if a 69.07 g piece at 100. .oC is cooled to an equilibrium temperature of 23.0 oC after it is dropped into 100 ml of water at 20.0 oC. (A)  0.4513 J/g.oC (B)  0.385 J/g.oC (C)  0.236 J/g.oC (D)  0.9017 J/g.oC   Hint Your response Not answered yet