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When 20 grams of water is cooled from 20 C to 10 C the number of joules of heat released is?
Wiki User
∙ 11y ago
200 calories, or approx. 47.84 joules
Wiki User
∙ 11y ago
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Joules divided by Celsius times grams?
J/g x C is the equation for heat capacity.
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?
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.
What will be the final temperature if 1600 cal of heat is given to an ice block of mass 20 grams?
I must assume that the ice block is at an initial temperature of 0o C. I also need to work in joules,. so I will convert the calories to joules. 1600 cal. (4.184 joule/1 cal.) = 6694.4 joules -------------------- 6694.4 J = (20 grams H2O)(4.180 J/gC)(Tf - 0o C) 6694.4/83.6 = Tf = 80o Celsius ==========
How many joules of energy are needed to melt 54-grams of ice at its melting point?
The specific latent heat/ latent heat of fusion of ice is 333.55 J/gtherefore by using the equation E=mLE = 54 * 333.55= 18011.7 JTherefore the energy needed to melt 54 grams of ice at its melting point which is keeping it at 0 degrees Celsius is 18011.7 Joules.
How many joules of energy are required to raise the temperature of 65 grams of iron from 25 degrees celsius to 95 degrees celcsius?
The specific heat of iron is either 0.46 or 0.45 Jolules/grams*Celsius, so......... q(in Joules) = mass * specific heat * Temp final - Temp. initial q = (65 grams Fe)(0.46 J/gC)(95 C - 25 C) = 2093 joules of energy
How many grams is equals 1 joules?
0000000000000000.11 joules
How many joules are in 1500 grams?
Voltage is electrical pressure and Joules is a power rating so other info is needed
How do you Convert 40.79 kilojoules per mole to joules per grams?
40.79 H2O kj/moles x 1 moles/18 grams= 2.266/1000=0.002266 joules/grams
Fifty grams of water cooled from 50 degrees to 10 degrees if the specific heat of wayer is 4.2 hoe much was released?
If fifty grams of water cooled from 50 degrees to 10 degrees, and the specific heat of water is 4.2, 135 kJ of heat was released.
How many grams are in 1 Kilo joules?
In principle, those two things measure different things (mass, and energy). To get the mass associated with a certain amount of energy, divide the number of joules (1 kJ = 1000 joules) by the square of the speed of light, i.e., divide by 9 x 1016 (m2/sec2). The answer is in kilograms; you an multiply this answer by 1000 to convert into grams.
What is the measurement for specific heat?
The unit for specific heat is Joules/g-Kelvin or it can be Joules/g-Celsius J= Joules g= Grams C= Celsius
What is the total number of joules required to melt 100 grams of ice at 0 C to liquid water at C?
226,ooo j
What is the total amount of heat energy in joules absorbed by 25.0 grams of water when the temperature of the water increased from 24.0 C to 36.0 C?
2520 Joules = (X)(4.180J/gC)(30C-10C) 2520J = 83.6X 30.14 grams of water.
How many joules are needed to melt 2 grams of water?
2,26 Kj are necessary
How do I convert the enthalpy of vaporization of water in joules per gram from kiloJoules per mole?
Lets say, for example the enthalpy is equal to 1200 joules/gram. You take 1200 joules/gram * (# of grams)/one mole [now you can cancel grams and it is now joules/mole.] Then convert the answer to kilojoules by dividing by 1000.
What is the total number of joules absorbed by 65.0g of water when the temperature of the water is raised from 25.0 to 40.0?
What is the total number of Joules of heat absorbed by 65.00 grams of water when the temperature of th water is raised from 25.00 C to 40.00 C
What is the total number of joules required to melt 100 grams of ice at 0 c to liquid water at 0 c?
226,ooo j
