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How many joules are necessary to raise the temperature of 53.5 grams of water from 16.5 degrees celsius to 70.1 degrees celsius?
Wiki User
∙ 13y ago
Energy is actually given off in the lowering of temperature. Use the equation Q = mc(change in T). In this case, m = 2.9, c = 4.179 J, and change in T = -12.1 degree C. Now solve for Q, the heat energy. This exothermic process gives off approximately 146.6 J of heat.
Wiki User
∙ 9y ago
Wiki User
∙ 13y agoq(Joules) = mass * specific heat * change in temperature
q = 53.5 grams H2O * 4.180 J/gC * (70.1 C - 16.5 C)
= 11987 Joules
Only 3 significant figures should be used given the numbers in your question. The answer would be correctly written as: 1.20 kJ
Wiki User
∙ 11y agoq = m x C x (Tf - Ti)
q = amount of heat energy gained or lost by substance m = mass of sample in grams = 2.83kg = 2830g C = heat capacity (J/ g•oC) = 4.18J/ g•oC
Tf = final temperature = 46 oC
Ti = initial temperature = 38 oC
(Tf - Ti) = 46 oC - 38 oC = 8 oC
q = 2830g x 4.18J/ g•oC x 8 oC = 9.46 x 104 J
Wiki User
∙ 9y agoThe number of joules to raise one gram of water by one degree Celsius is 4.2 Joules. The total number of joules needed then is 95,088 joules.
Wiki User
∙ 9y agoIt takes 4.2 joules per gram of water to raise the temperature by one degree Celsius. The total number of joules is then 190.176 kilojoules.
Wiki User
∙ 10y ago46 calories (or 192,464 joules) for each Celsius degree.
Wiki User
∙ 12y agoq(Joules) = mass * specific heat * change in temperature
q = (20 grams H2O)(4.180 J/gC)(40o C - 30o C)
= 836 Joules needed
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Wiki User
∙ 15y ago0.0796636 J
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15480.80
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If 705g of water is heated 889J how much will its temperature increase?
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How many kilojoules of energy are necessary to raise the temperature of 3 kilograms of cast iron from 30 degrees celsius to 120 degrees celsius?
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A particular sample of iron requires 562 Joules to raise its temperature from 25 degreee Celsius to 50 degrees Celsius. What must be the mass of the sample of iron?
The change in temperature is 25 degrees Celsius, meaning it takes 22.48 joules per degree of change. The specific heat of iron is 0.449 J/g degree Celsius. This means that the mass of iron must be 50.07 grams
