Lab: Calorimetry and Specific Heat — Unit test Answers
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The temperature of a gas is increased. Which statement best explains the effect that this has on the motion of gas particles?
A
The average kinetic energy decreases, and the particles stop colliding.B
The average kinetic energy increases, and the particles stop colliding.C
The average kinetic energy decreases, and the particles collide less frequently.D
The average kinetic energy increases, and the particles collide more frequently.24
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A sample of an unknown substance has a mass of 0.465 kg. If 3,000.0 J of heat is required to heat the substance from 50.0°C to 100.0°C, what is the specific heat of the substance?Use .
A
0.00775 J/(gi°C)B
0.0600 J/(gi°C)C
0.129 J/(gi°C)D
0.155 J/(gi°C)25
Which answer defines exothermic reaction?
A
a process in which energy is released as heatB
a process in which energy is absorbed as heatC
a process in which energy is stored and releasedD
a process in which energy is not present in a systemDid you find these answers helpful?
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