U.S.gallon = 8.33 pounds of water.
Therefore to raise the temperature by one degree F will require 8.33 BTU.
The initial temperature of 50 F is inconsequential.
heat will flow from the iron to the water until both are the same temperature
You would need to remove approximately 1200 BTUs of heat to convert a gallon of water to ice. There are 8.34 lb in a gallon of water, which converting to lb-moles is 0.463. The latent heat of crystallization for water is -2583.4 BTU/lb-mole. Multiplying the two together and you get -1197 BTUs, which means you need to remove that amount of heat to convert the gallon of water to ice.
answer: 7680 btu 1 gallon= 8 lb 130F-50F=80F 12G*8LB*80F=7680 BTU
No BTU are required in order to lowerthe temperature of water. All you have to dois place the water in an environment that is cooler than the water is, then stand backand watch the temperatue of the water drop while the BTU flow out of it.
It depends on the pressure and temperature of the gas.
Depends on the temperature of the ice.
This is a pretty straightforward calculation. By definition, a BTU is the amount of energy required to raise one pound of water one degree F. But you have one gallon of water, which weighs approximately* 8.34 pounds. So, you'd need 8.34 BTU to increase one gallon of water one degree F. Note how the amount of time was not important. Whether you heat the water slowly or quickly doesn't matter. You will still require 8.34 BTU to raise the temperature of a gallon of water one degree F. * I say approximately because the weight of water varies slightly with its temperature. Water is at its densest at 4 degrees Celsius (39 degrees F). A gallon of water at temperatures above and below that value will weigh less.
heat will flow from the iron to the water until both are the same temperature
The correct temperature to keep MOST, not all turtles, is at 81 degrees Fahrenheit or 29 degrees Celsius
what is the answer to this
If the temperature is around 20 degrees (Celcius) probably not. But for a five GALLON fish tank, probably.
The proper storage temperature for one gallon of milk is in the refrigerator with a temperature below 40 degrees Fahrenheit. Do not store the milk on the refrigerator door. Keep it on a shelf where it will stay cooler.
Aviation gasoline (avgas) has an average weight of slightly over 6 pounds per gallon (6.02) at a Standard Day temperature of 15 degrees C or 59 degrees F.
It takes 8.33 BTU to raise the temperature of water 1 degree F.
Because gasoline expands and contracts based on temperature, the industry uses a standard temperature -- 60 degrees Fahrenheit -- as part of its definition of a gallon. To the industry, a gallon of gasoline is the amount of fuel that occupies 231 cubic inches at 60 degrees. But at 75 degrees, the same amount of fuel occupies 233.4 cubic inches. At 90 degrees, the gas expands to 235.8 cubic inches. Look at the link provided and you will see the mystery of hot fuel and the money to be made by it.
There is no standard length of time that it takes for a gallon of water to freeze. The amount of time it takes for a gallon of water to freeze can vary depending upon many different things such as temperature.
It takes 8.34 BTU to heat 1 gallon of water 1 degree F. Take 8.34 BTU times number of gallons to determine energy needed to raise pool 1 degree F. Then multiply by how many degrees you need to raise the temperate of the current pool temperature to the desired temperature. Example: 8.34 * 30,000 gal = 250,200 BTU need to raise temperature 1 degree F Next multiple by the number of degrees to warm, say the pool is 55 F. 80F - 55F = 25F. 250,200 BTU * 25 F = 6.255 million BTUs to heat the pool to 80 F. This does not take into account the loss of energy to the surroundings but gives you a starting point to determine the energy needed to heat a mass of water.