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How much energy is needed to keep one gallon of water from freezing?
None. When water freezes it _releases_ energy (the heat of fusion, 333.55 kj.kg). To keep it from freezing, simply keep the energy constant. If the ambient temperature is below zero C (32 F) the rate of energy loss will depend on the temperature of the air and the thermal resistance (insulation value) of the water's container, and other factors such as wind speed. In those conditions you must replace the energy lost to prevent the water from freezing. However, the energy needed depends on the rate of loss, not on the amount of water.
If 30.86g of H2O is frozen (from liquid to solid) how much heat energy is required?
No heat (energy) is required to freeze water (from liquid to solid). Freezing RELEASES energy (heat), as it is an exothermic event. If you want to know how much energy is release, you need to know the heat of fusion for water, and then multiply that by the mass of water being frozen.
How much energy is generate from freezing 2.5 g water?
2.5 g 1 mol/18.02 g (-285.83) kJ/mol
How much energy in calories is released when 83.0g of water freezes?
347 J/g.K or 83 cal are released.
If the process of melting absorbs heat energy from the surroundings then what would the process of freezing do?
Melting is the result of enough heat energy being transferred INTO an object to turn it into a liquid. Freezing is the result of enough heat energy being transferred OUT of a liquid to turn it into a solid. Melting and freezing are not as much of a "process" as they are a result. For example: When you put water into the freezer, the heat energy in the warm water is transferred into the colder air, which causes the water to freeze. That process causes the air in the freezer to warm up slighltly. The process of refridgeration then transfers that heat out of the freezer, which makes the air in the freezer nice and cold again.
How much energy is generated from freezing 2.5g water?
0
How much energy is involved in the freezing of 4256g of water?
You need to know the initial temperature.
How much energy is needed to keep one gallon of water from freezing?
None. When water freezes it _releases_ energy (the heat of fusion, 333.55 kj.kg). To keep it from freezing, simply keep the energy constant. If the ambient temperature is below zero C (32 F) the rate of energy loss will depend on the temperature of the air and the thermal resistance (insulation value) of the water's container, and other factors such as wind speed. In those conditions you must replace the energy lost to prevent the water from freezing. However, the energy needed depends on the rate of loss, not on the amount of water.
How much energy is released from the synthesis of water?
For water vapours, 286 kJ/mol.
How much energy is released when 6 g of water is condensed from water vapor?
6.212
How much energy is generated from freezing 2.5 water?
2.5 g 1 mol/18.02 g (-285.83) kJ/mol
If 30.86g of H2O is frozen (from liquid to solid) how much heat energy is required?
No heat (energy) is required to freeze water (from liquid to solid). Freezing RELEASES energy (heat), as it is an exothermic event. If you want to know how much energy is release, you need to know the heat of fusion for water, and then multiply that by the mass of water being frozen.
How much energy is generate from freezing 2.5 g water?
2.5 g 1 mol/18.02 g (-285.83) kJ/mol
How much energy is generated from freezing g water?
2.5 g 1 mol/18.02 g (-285.83) kJ/mol
How much energy in calories is released when 83.0g of water freezes?
347 J/g.K or 83 cal are released.
What is the freezing point for sugared water?
It depends on how much sugar is in the water.
What does salt have to do with the freezing point of water?
Adding salt to water the freezing point decrease.
