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If an ice cube at 0 0 c melts to water by absorbing heat if 10.5 cal of heat is required to melt ice how much energy must be lost to freeze water at 0 0 c to ice?
Wiki User
∙ 14y ago
Q = mcΔT
Q = (35.9 g) (4.184 J/(g*K)) (19.5 oC - 45.0 oC) (1 K / 1 oC)
Q = (35.9 g) (4.184 J/(g*K)) (-25.5 K)
Q = -3.83 * 103 J
Q = -3.83 kJ
The water has lost 3.83 kJ of energy, and this energy was supplied to the ice cube to melt it. A reasonable extension to the question would be to ask what was the mass of the ice cube added. This can be calculated with the molar enthalpy of fusion of ice: 6.01 kJ/mol
m = (3.83 kJ)/(6.01 kJ/mol) * (18.02 g / 1 mol)
m = 11.5 g
I think this also answers your other questions.
Wiki User
∙ 15y ago
Wiki User
∙ 14y agoIf an ice cube at 0 0 c melts to water by absorbing heat if 10.5 kcal of heat is required to melt ice how much energy must be lost to freeze water at 0 0 c to ice?
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When ice melts the particles of solid water energy 6 letters?
"absorb" When ice melts the particles of water -absorb- energy.
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When an ice cube gains energy, it is the same as gaining heat. So if an ice cube is getting warmer, it melts.
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beacause salt melts ice.
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When ice melts the particles of solid water energy 6 letters?
"absorb" When ice melts the particles of water -absorb- energy.
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It... melts...? How do you not know this? This is basic knowledge.
Is when ice turns into liquid water?
A physical change of freezing (or solidification)
