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Worksheetsspecific latent heat
Total questions: 10
Worksheet time: 6mins
Latent heat is
the heat absorbed or released at a boiling process during a change of phase
the heat absorbed or released at a constant temperature during a change of phase
the heat absorbed or released at a constant temperature during a change of phase of 1 kg object
the heat absorbed or released by an object to increase or decrease its temperature by 1 degree Celcius
The heat absorbed by melting a solid is known as
latent heat of fusion
latent heat of solid
latent heat of liquid
latent heat of vaporisation
specific latent heat of vaporisation is
the amount of heat required to change 1 kg of the substance from the solid to liquid phase without change in temperature
the amount of heat required to change 1 kg of the substance from the liquid to gaseous phase without change in temperature
the amount of heat required to change the temperature 1 kg of the substance by 1 degree Celcius
the symbol for specific latent heat is
c
L
Q
m
What is the formula to calculate specific latent heat of vaporisation?
L = Q/m
c = Q/(mΔƟ)
Q = mcΔƟ
Q = mL
How much energy is required to change 5 kg of ice at 0 ° C into water at the same temperature? (latent heat of fusion is 3.36 X 106 J/kg )
16.1 X 106 J
16.8 X 106 J
15.1 X 106 cal
16.8 X 106 cal
How much energy is required to melt down a 2000 g of mercury?(latent heat of fusion is 1.14 x 104 J/kg)
2.55 x 104 J
2.28 x 104 J
2,280 x 104 J
3.28 x 104 J
How much energy is required to change 2600 g of water at 100 ° C into steam temperature? (latent heat of vaporization is 2.26 x 106 )
Q = 5.9 X 106 J
M = 5.9 X 106 J
C = 5.9 X 106 J
Δ T = 5.9 X 106 J
The specific latent heat released at stages?
Consider the following temperature-time graph when a solid is heated. which part of the graph involves latent heat of vaporization?
Part I
Part II
Part III
Part IV
