
CfE Review 2024
Authored by Vanesa Serafines
Chemistry
University
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31 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
For the formula:
Q= m c ∆T
The units for specific heat are:
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What would be the effect on the particles if more heat is supplied to the system?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Thermal energy ALWAYS moves from _____ to _____.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If the specific heat of water is 4,186 J/kg∙°C, how much heat is required to increase the temperature of 1.2 kg of water from 23 °C to 39 °C?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the specific heat of an unknown substance if 20 kg of it at 400 °C reaches an equilibrium temperature of 351 °C when it comes in contact with a piece of aluminum. The aluminum weighs 55 kg and had an initial temperature of 4 °C? (Specific heat of aluminum is 903 J/kg °C) Use the equation mC(Tf – Ti) + mC(Tf – Ti)= 0
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The SI unit of heat and energy is the __________.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A sample of iron receives 50.J of heat energy that raises the temperature of the iron by 25.0°C. If iron has a specific heat of 0.10 J/g°C, what is the mass of the iron sample? (show your work)
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