Chemistry

Chemistry, 22.06.2019 10:00, melissa9882

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

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Physics, 23.06.2019 10:40, puzzledprincess8037

4.at 0 ºc, some amount of energy is required to change 1 kg of water from a solid into a liquid. if you had a 2 kg piece of ice, what effect would this have on the amount of thermal energy required to change the water from a solid to a liquid? it would require more energy to change solid water into liquid water because there are more molecules in this larger piece of ice. it would still require the same amount of energy to change solid water into liquid water because the entire piece of ice would still gain the same amount of energy in each case. it would require energy to be removed from the 2 kg piece of ice. the larger piece of ice already has more total energy than the smaller piece of ice, so energy must be removed for the ice to become liquid. it would require less energy to change solid water into liquid water because the energy would spread through the ice more quickly and the ice already has a larger total amount of energy because it is larger than a 1 kg piece of ice.

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Physics, 14.07.2019 16:30, Kaylaonfleek0956

Once water has been heated to its boiling point, additional heating will not raise its temperature. what happens to this additional energy? a. energy was used to change phase of water from liquid to gas (evaporation). it is radiated back into the atmosphere from the stove. b. the extra energy is absorbed by the water and is stored for use at a later time. c. extra energy is turned into potential energy and is stored in the liquid water molecules. d. energy was used to change phase of water from liquid to gas (evaporation). it is stored in the water vapor produced.

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Chemistry, 05.10.2019 15:10, jpimentel2021

Need ! what is required to change water from a liquid to a gas? (a)the addition of energy (b)a change in the chemical composition (c)a reduction of the volume of the sample (d)a reduction of the mass of the sample

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Chemistry, 29.10.2019 21:31, fordkenae

A50.0 g sample of liquid water cools a total of 68 °c. how much energy is involved in this change

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A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in thi...

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