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How many BTUs will it take to change 1 gallon of water at 32 degrees to ice at 32 degrees?
Wiki User
∙ 17y ago
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.
Wiki User
∙ 17y ago
KD Grayson
A BTU is the amount of heat required to heat or cool 1 lb of water 1 degree, water freezes at 32F so it should not require any more than 1 degree to be below freezing.
There are 8lbs in1 gallon of water, so 8 BTU's will lower a gallon(8 lbs) 1 degree.
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How many btus are required to change five pounds of ice at 20 degrees to steam at 220 degrees?
6,520 Btus
How many BTUs does it take to raise the temperature of water from 32 degrees to 300 degrees?
That will completely depend on how much water there is.
How many Btus will it take to raise 10 pounds of water from -5 to 220 Degrees?
2250
How many btus must be removed from one pound of water at 200 degrees f for it to end up as ice at 30 degrees f?
313 Btu
What is the Gallon Per Hour use of a kerosene heater?
Depends on the BTUs of the heater.
How many BTUs does it take to heat 390 gallon tank of water from 60 degrees to 248 degrees?
The specific heat of water is 1 BTU per pound per degree Fahrenheit. There are 8.3378 lbs/gallon at 60 degrees, which equals 3251.742 pounds of water. The number of BTUs to raise it 188 degrees is then 611,327.496 BTUs.
How many btus are required to change five pounds of ice at 20 degrees to steam at 220 degrees?
6,520 Btus
How many BTUs does it take to raise the temperature of water from 32 degrees to 300 degrees?
That will completely depend on how much water there is.
How many btus are required to change one pound of ice at 20 degrees Fahrenheit to steam at 220 degrees Fahrenheit?
1)This is a 5 part question. The first is realizing that 20F to 32F uses .5BTU per pound per degree. That means it takes 32-20=12*.5=6BTUs to get the ice to 32F. 2)Then you need to know the Latent Heat of Fusion for Ice which is 144BTUs (given). Lets assumes the ice changes from ice to water instantaneously at 32F. 3)Next we calculate the BTUs from 32F to 212F. Which is 1BTU per pound per degree F. 212-32=180 so it take 180BTUS. 4)Next we have to use the Latent Heat of Vaporization of water which will say instantaneously converts water to vapor. This takes 970BTUS (given). 5)Then we calculate the BTUS from 212F to 220F. Which is .5BTUs per pound per degree F which is 220-212=8*.5=4BTUs...... Finally add up all the BTUs and you get 6+144+180+970+4=1304BTUs.
How many btus does it take to raise of 5 pounds of water to 5 degrees Fahrenheit?
25
How many Btus will it take to raise 10 pounds of water from -5 to 220 Degrees?
2250
How many BTUs per gallon of petrol?
About 114,000 BTU per US gallon.
How many btus must be removed from one pound of water at 200 degrees f for it to end up as ice at 30 degrees f?
313 Btu
How many btus are needed to heat one lb of water one hundred degrees?
100 BTU if it's Fahrenheit
What mass of water can be heated from 25 degrees celsius to 5 degrees celsius by the addition of 2825 joules?
None. Changing water from 25 degrees C to 5 degrees C requires heat to be REMOVED, not added!
How many BTU's per gallon of kerosine?
One gallon of kerosene will produce 134,000 BTUs of energy when burned.
How many BTUs will it take to lower 1 gallon of water 1 degree?
1 BTU = heat corresponding to change in temperature of 1 pound of water by 1° Fahrenheit.Weight of 1 gallon of water = roughly 8.33 poundsHeat corresponding to change in temperature of 1 gallon of water by 1° Fahrenheit = 8.33 BTU.But it doesn't take that, i.e. you don't have to supply it. You're talking about lowering thetemperature, so you're just allowing the water to cool on its own. As it does, it releases8.33 BTU of heat, which you can then collect and take away to use somewhere else.
