A British thermal unit (BTU) is defined as the amount of heat required to raise the temperature of 1 pound of water by 1 degree Fahrenheit. To calculate the temperature of a water sample from the BTUs applied to it, you must know the weight of the water and its starting temperature. You can measure the weight of the water using a scale, and the temperature using a Fahrenheit thermometer. Once you have that information, calculating the temperature of the water after applying a known number of BTUs of heat is easy. Use your scale to measure the weight of the container that your water will be in, then add your water to the container and measure its weight again. Determine the weight of the water by subtracting the weight of the empty container from the weight of the full container. For instance, suppose that a bucket weighs 2 pounds (lbs) while empty and 12 lbs with water in it. The weight of the water is: Weight of water = 12 lbs -- 2 lbs = 10 lbs Dip the metal bulb of your thermometer ...
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How Do You Calculate Temperature From BTU?