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प्रश्न
Which has more heat: 1 g ice at 0℃ or 1g water 0℃? Give reason.
Which will contain more heat energy 1 g of ice at 0°C or 1 g water at 0°C?
उत्तर १
1 g of water at 0°C has more heat than 1 g of ice at 0°C. This is because ice at 0°C absorbs 360 J of heat energy to convert into water at 0°C.
उत्तर २
At 0°C, 336 J of heat energy is taken in by ice, turning it into water. Water therefore has higher heat energy at 0°C.
संबंधित प्रश्न
State two factors upon which the rate of emission of thermions depends.
State the effect of an increase of impurities on the melting point of ice.
What is the energy absorbed during the phase change called?
Explain the following:
The surrounding become pleasantly warm when water in a lake starts freezing in cold countries.
The specific latent heat of fusion of water is ______.
What is meant by latent heat? How will the state of matter transform if latent heat is given off?
Define the following terms:
(i) Latent heat,
(ii) Latent heat of fusion of ice.
What is the name given to the energy absorbed during a phase change?
Name two factors on which the heat absorbed or given out by a body depends.
When 1 g of ice at 0 °C melts to form 1 g of water at 0 °C then, is the latent heat absorbed by the ice or given out by it?
Explain the meaning of greenhouse effect.
Steam at 100°C is passed over 1000 g of ice at 0°C. After some time, 600 g of ice at 0°C is left and 450 g of water at 0°C is formed. Calculate the specific latent heat of vaporization of steam (Given: specific heat capacity of water = 4200 J/kg°C, specific latent heat of fusion of ice = 336,000 J/kg.)
How fog is formed?
Write scientific reason.
Use a pressure cooker to cook food in cold air.
Define specific latent heat capacity
Specific latent heat L = ______.
Give some practical applications of specific latent heat of ice.
2875 J of heat is required to melt 115 g of lead at its melting point. Calculate the specific latent heat capacity of fusion of lead.
Calculate the total amount of heat energy required to melt 200 g of ice at 0°C to water at 100°C. (Specific latent heat of ice = 336 Jg-1, specific heat capacity of water = 4.2 Jg-1 °C-1)
