Specific Heat (Grades 11-12)
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Specific Heat
1.
According to Joule's Law, the internal energy of a gas is a function of the energy of its molecules.
2.
When working gas law problems, all temperatures must be converted to the
- Celsius scale.
- Fahrenheit scale.
- Boyle scale.
- Kelvin scale.
3.
What is the term used for the amount of heat per unit mass required to raise the temperature of a substance by one degree Celsius?
- temperature capacity
- latent heat
- specific heat
- relative heat
4.
What is the formulaic relationship between Q, C, m and [math]Delta[/math]T, where
Q is the amount of heat transferred to an object
C is the specific heat of that object
m is the mass of the object and
[math]Delta[/math]T is the change in temperature?
Q is the amount of heat transferred to an object
C is the specific heat of that object
m is the mass of the object and
[math]Delta[/math]T is the change in temperature?
- Q = Cm[math]Delta[/math]T
- Q = Cm/[math]Delta[/math]T
- C = [math]Delta[/math]T/mQ
- C = Qm[math]Delta[/math]T
5.
The SI unit for specific heat is 1 .
6.
Which of these substances has the highest specific heat, requiring the most amount of heat energy to raise its temperature by [math]1degC[/math]?
- iron
- wood
- oil
- water
7.
What is the specific heat of water?
- 4.186 J/g•°C
- 10 J/g•°C
- 1 kcal/g•°C
- 1 cal/kg•°C
8.
The specific heats of gases are generally expressed as molar specific heats because the number of moles is a more convenient measure of an amount of gas.
- True
- False
9.
A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron.
[math]C=Q/(m*DeltaT)[/math]
[math]C=Q/(m*DeltaT)[/math]
10.
If 335 g of water at 65.5 °C loses 9750 J of heat, what is the final temperature of the water? Liquid water has a specific heat of 4.18 J/(g•°C).
[math]DeltaT=Q/(m*C)[/math]
[math]DeltaT=Q/(m*C)[/math]
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