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How much heat in kJ is required to melt 54.0 g of ice at 0 and degC into water at 0 and degC if and DeltaHfus for water 6.01 kJmol?
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When 10 g of diethyl ether is converted to vapor at its boiling point about how much heat is absorbed (C4H10O and Icirc and 148Hvap 15.7 kJmol boiling point 34.6 and Acirc and degC)?
2kj
How many kilojoules of heat are absorbed when 0.38 g of chloroethane (C2H5Cl bp 12.3 and degC) vaporizes at its normal boiling point (The molar heat of vaporization of chloroethane is 26.4 kJmol.)?
The necessary heat is 0,155 kJ.
The specific heat of a certain type of cooking oil is 1.75 cal(g and middot and degC). How much heat energy is needed to raise the temperature of 2.40 kg of this oil from 23 and degC to 191 and degC?
The energy is 103,6 kcal.
How many joules are required to melt 12.8 g of ice at 0 and degC?
To answer this, you need to know the ∆Hfusion of water, which happens to be 334 J/g. So, to melt 12.8 g of ice at 0ºC, the joules needed = (12.8 g)(334 J/g) = 4275 joules
At normal atmospheric pressure and a temperature of 0 and degC which phase(s) of H2O can exist?
Ice (solid water) - the freezing point of water is o 0C; but because of the sublimation also gaseous molecules exist.
How many kJ of energy are required to melt 30.7 g of ice The heat of fusion of water is 6.02 kJmol. The temperature remains constant at 0 and degC. kJ?
10,267 kJ are needed
When 10 g of diethyl ether is converted to vapor at its boiling point about how much heat is absorbed (C4H10O and Icirc and 148Hvap 15.7 kJmol boiling point 34.6 and Acirc and degC)?
2kj
What water does at 100 and degc?
It boils
What would happen to a sample of water at 30 and degC if it is heated until the temperature reaches 120 and degC?
Water is transformed in vapors.
What is the average temperature of a nuclear reactor?
A PWR has an inlet water temperature of 275 degC and outlet 325 degC
How many kilojoules of heat are absorbed when 0.38 g of chloroethane (C2H5Cl bp 12.3 and degC) vaporizes at its normal boiling point (The molar heat of vaporization of chloroethane is 26.4 kJmol.)?
The necessary heat is 0,155 kJ.
What temperature is required for fusion to happen?
In tokamak reactors, approx 300 million degC
What would happen to the solubility of potassium chloride in water as the water temperature increased from 25 and degC to 100 and degC?
The solubility increase from 38,7 g KCl/100g water to 40,7 g KCl/100 g water.
What phase is water in at 1 ATM pressure and 150 and degC?
It is in the gas phase.
A solid substance with a mass of 200 grams is at its melting point temperature in a calorimeter While the substance changes from a solid to a liquid at the same temperature the 400-gram mass of water?
(4.184 J/g*degC)(400g)(40.0*degC-80.0*degC)+(200g)
How many joules of energy are necessary to heat a sample of water with a mass of 46.0 grams from 0.0 celsius to 100.0?
419.1 Joules are required to heat one gram of liquid water from 0.01 degC to 100 deg C. So the answer is 419.1*46 = 19278.6
What is the unit for heat?
The metric unit for heat is the calorie - the heat required to raise 1 gram of water by 1 deg C. In the SI unit system it would be the kilocalorie - the heat to raise 1 kg by 1 degC
