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1 BTU (british thermal unit) of heat energy will change the temperature of 1 pound of water by 1 degree Fahrenheit.
If you are talking about 1 pound of water, since this is a change of 100 deg f, it would require 100 BTU. 2 pounds require 200 BTU. 3 pounds require 300 BTU. etc.
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How much heat energy is absorbed in 65 gram sample whose temperature changed from 45 to 80 degrees celsius?
That completely depends on the specific heat capacity of the substance of which the sample is composed, which you haven't identified. It will take a lot more heat energy to raise the temperature of 65 grams of water 35 degrees than it would take to do the same to 65 grams of iron or yogurt, e.g.
How many minutes does it take for water to get 80 degrees F?
It depends entirely on what the initial temperature and volume of the water is and how much heat is applied.
How much time did it take for the water to reach 100 degrees celsius?
Oh, dude, it took however long it took to heat up to 100 degrees celsius. Like, time is just a concept, man. But technically speaking, it depends on the heat source and the initial temperature of the water. So, it could be a few minutes or longer, you know?
How much heat does it take to change 92 pounds of water at 137 degrees F to 119 degrees F?
Use 1 BTU = 1 lb of water 1° F.Quantity = 92 lbsTemp change = (137° - 119°) = 18° F.92 x 18 = 1,656 .It doesn't 'take' any heat to do the job. Since you're allowing the water to cool,from 137° to 119° , the water will release 1,656 BTU of heat as that happens.Then you can gather up the heat and take it away to do something else with it.
How do you convert calories to degrees Celsius?
You don't, because they measure different things. Temperature (degrees Celsius) describes how deep the heat is in something, whereas energy (calories) describes how much heat energy you put into it in order to make it that deep. -- I have a bucket of water on the table. -- I take a small cup, I dip a cup of water out of the bucket, and I place the cup on the table next to the bucket. -- The water in the bucket and the water in the cup both have the same temperature. -- I want to make the cup 10 degrees warmer, and I also want to make the bucket 10 degrees warmer. -- I'll need to add more calories of heat to the bucket, and fewer calories of heat to the cup, to raise both temperatures by the same number of degrees.
