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Calculate the energy in joules and calories to heat 9.25g water from 9.5c to 70.8c?
Wiki User
∙ 12y ago
567 cal and 2372 J
Wiki User
∙ 12y ago
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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.
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 many joules of energy are necessary to heat a sample of water with a mass of 46.0 grams for 0.0?
46 calories (or 192, 464 joules) for each Celsius degree.
How much energy is needed to heat 50 liters of water to 50 degree centigrade?
300 calories, which is equal to about 1255.2 joules
How much energy is needed to reduce water temperature from 15 degrees to 14 degrees?
1 calorie increases 1 gram of water by 1 degree celsius. 4.18 Joules are needed to increase the temperature of 1 gram of water by 1 degree celsius. To reduce the 1 gram of water 1 degree celsius it would have to give off 1 calorie of energy. To calculate the energy multiply the mass in grams of water by 4.18 and by the change in temperature. The energy = 4.18 x m x change in T. The answer is in Joules. If you are using calorie as the unit of energy, replace 4.18 J by 1 C. Note that food is measured in kilocalories (Calories) not metric calories.
What is the amount of energy can change a solid phase to a liquid phase?
Every element has its own energy requirement to change a solid to liquid form. This energy , for water. is 80 calories (333 Joules) to turn a gram of ice to liquid water.
How much thermal energy is required to boil 2.83 kg of water from 50c?
2830 g of water raised through 50 degrees C would use 2830 x 50 calories. But then to boil the water away to steam completely requires another 550 calories per gram, which is 2830 x 550 calories. To convert to Joules, use 4.2 Joules per calorie.
What is the chemical formula of calories?
The is not chemical formula for calories. The word 'Calories' is an old fashioned measure of energy. Its modern name is 'Joules'.
A beaker containing 400g of water has 1200 J of work done on it by stirring and 200 cal of heat added to it from a plate What is the change in the internal energy of the water in Joules?
Both the stirring and the heat energy added will increase the internal energy, so all you need to do is add both together. Don't forget to convert the calories to joules first.
How many joules of heat energy must be supplied to 21 g of water to raise the temperature of the water from 24 to 95 degrees Celsius?
21 grams through 71 degrees is 21x71 calories.
When 1 gram of water at 0 degrees Celsius freezes to form ice how many total joules of heat are lost by the water?
It's necessary to remove 540 calories from a gram of water in order to freeze it. That's about 2260 joules. The amount of energy used by a freezer to do this depends on the efficiency of the freezer.
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
