100.°C was passed into a flask containing 550.0g of water at 32°C where the steam condensed. How many grams of steam must have condensed if the temperature of the water in the flask was raised to 78°C? The heat of vaporization of water at 100.°C is 40.7 kJ/mol, and the specific heat is 4.18 J/(g-°C). g Submit Answer Try Another Version 1 item attempt remaining
Latent heat and phase change
A physical process in which a conversion among the basic states or phases of matter, i.e., solid, liquid, and gas takes place under the effect of a certain temperature and pressure is referred to as a phase change. Generally, the phase change of a substance occurs when heat transfer takes place between the substance and its surroundings. Based on the direction in which heat transfer takes place, different types of phase changes can occur.
Triple Point of Water
The branch of physics in which observer deals with temperature related properties is called thermodynamics.
Boiling Point of Water
Everyday examples of boiling is, boiling milk, heating water. One would have observed that when we heat water it goes through various stages and at one point bubbles show in water, and water keeps splashing with bubbles bursting, we in layman terms say that water is boiling.
Freezing Point of Water
In general, the freezing point of water is 0° Celsius, or 32° Fahrenheit. This is the temperature at which water will ordinarily change from its liquid state to its solid state (ice). However, there are certain conditions that can affect the freezing point of water. For example, a liquid may be supercooled or contain impurities so that it does not freeze at the ordinary freezing point.
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Steam at 100.°C was passed into a flask containing 550.0 g of water at 32°C where the steam condensed. How many grams of steam must have condensed if the temperature of the
water in the flask was raised to 78°C? The heat of vaporization of water at 100.°C is 40.7 kJ/mol, and the specific heat is 4.18 J/(g.°C).
g
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How much heat must be added to 23.9 g of solid white phosphorus, P4, at 24.1°C to give the liquid at its melting point, 44.1°C? The heat capacity of solid white phosphorus is 95.4
J/(K mol); its heat of fusion is 2.63 kJ/mol.
Heat
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