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How many joules of energy are released when 45.0 g of water cools from 18.0 oC to 7.0 oC?
Wiki User
∙ 9y ago
energy = mass x specific heat x temperature change
= 45 x 4.181 x 11 J
= 2069.595 J
Wiki User
∙ 9y ago
Khadia Fade
Wiki User
∙ 6y agoThe energy released is 32,657 joules.
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How does a hot water cools when it is kept in a closed container?
Hot Water cools,though kept in a closed container,because of its surroundings.Heat escapes into the environment till the temperature of water(system) and surroundings become the same. Its simply the transfer and exchange of energy.
Specific heat capacity of water?
The specific heat of water is 4.184 J/g*°C, which is read 4.184 Joules per gram degree Celsius. It can also be stated as 1.00 cal/g*°C, which is read calories per gram degree Celsius (same as centigrade). These values mean that it takes 4.184 Joules of energy to raise the temperature of 1 gram of water 1 degree Celsius. Or it takes 1.00 calories of energy to raise the temperature of 1 gram of water 1 degree Celsius. 4.184 Joules = 1.00 calorie
Describe the role of energy when ice melts and when vapor condences to form liquid water?
When water molecules melt, energy is absorbed. When water molecules evaporate, energy is also absorbed. When water molecules condense energy is released. When water molecules freeze energy is also released.
Why does hot water cool quicker in the first 5 minutes?
This is because of newtons law of cooling, the rate that the water cools is proportional to the difference between the temperature of the water and the temperature of the surroundings. So, as the water is hotter it cools faster, as it cools down the rate of cooling decreases.
Does water cool more quickly than land?
Land cools faster because land is floating on the earths surface. Water gets deeper, so the suns heat cant heat the bottom of the ocean as well as the surface
How many watts of energy are in a gallon of salt water?
A watt is a unit of power (Joules/second: energy / time). I guess it depends on what method you are using to get energy out of the water, as to how much energy is in it.
When 418 joules of heat energy are added to 10 grams of water at 20C the final temperature of the water will be?
21
Latent heat of fusion for H20 ice to water?
334 Joules per gram ... at 0oC, 334 Joules of energy must be added to melt one gram of ice from solid to liquid form, and 334 Joules of energy must be removed to freeze one gram of liquid water to form ice.
During which process does water gain the most heat energy?
Evaporation because it requires 2,260 Joules to gain heat energy. Condensation, freezing, and melting require less Joules than evaporation.
How many joules of energy are necessary to heat a sample of water with a mass of 46 g?
46 calories (or 192, 464 joules) for each Celsius degree.
How much energy is needed to melt 0.25 moles of water?
The necessary heat is 9,22 joules.
How much energy is required to heat 955 g of water from 20 degrees C to 100 degrees C?
4.1858 joules of energy will raise the temperature of 1 g of water by 1oC. Thus, 4.1858 * 955 * 80 = 319795.12 joules of energy is required to raise the temperature of 955 g of water by 1oC.
Energy of?
The most common unit of energy in Biology is calories. A calorie is a unit of energy, require to raise 1 kilogram of water to 4.1868 joules.
What is energy heat 5.00 g water from 4C to 37C?
This energy is: 5 x 33 x 4,16 137,28 Joules.
When water evaporate it heat energy and the surrounding air?
when water evaporates it absorbs heat energy and cools the surrounding air
When 20 grams of water is cooled from 20 C to 10 C the number of joules of heat released is?
200 calories, or approx. 47.84 joules
When water evaporates energy is released?
Yes, when water evaporates, energy is released.
