The specific heat capacity of a substance is the heat required to warm

1 kilogram of it by one degree Celsius

Sublimation occurs when

liquid water changes to gaseous water.

The latent heat of melting for Pb is 22.4 kJ/kg and that of O2 is 13.9 kJ/kg. This means:

More energy is needed to melt lead than is needed to melt O2

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Thermodynamics

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Answers

1
Convert the temperature of 100 o F to degrees Celsius
24 oC
38 oC
122 oC
148 oC
2
A cylinder containing water is heated by a burner. What is this type of thermodynamic process?
Isobaric
Isentropic
Isothermal
Isochoric
3
Temperature is a measure of ____ of the particles in an object.
the difference between the potential and kinetic energy
the sum of the potential and kinetic energy
the average potential energy
the average kinetic energy
4
Convert the temperature of 32 oF to degrees Kelvin
323 degree K
273 degree K
388 degree K
299 degree K
5
The specific heat capacity of a substance is the heat required to warm
1 kilogram of it by one degree Celsius
it by 1 degree Celsius
an equal weight of water by one degree Celsius
1 kilogram of water by one degree Celsius
6
An increase in heat in a system __________.
decreases entropy
reduces temperature
has less kinetic energy
increases entropy
7
Sublimation occurs when
ice changes to gaseous water.
liquid water changes to ice.
liquid water changes to gaseous water.
ice changes to liquid water.
8
The temperature of Lightening is 28000 o K. Convert this temperature to degrees Fahrenheit.
15666 degree F
49940 degree F
50149 degree F
50000 degree F
9
Which of the following laws of physics becomes the foundation of thermodynamics?
Newton’s laws of motion
Law of universal gravitation
Law of conservation of momentum
Law of conservation of energy
10
The latent heat of melting for Pb is 22.4 kJ/kg and that of O₂ is 13.9 kJ/kg. This means:
Lead melts at a higher temperature
More energy is needed to heat lead than the same mass of O2
Less energy is needed to heat lead than the same mass of O2.
More energy is needed to melt lead than is needed to melt O2

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