Question

How much heat transfer (in kJ) is necessary to raise the temperature of 0.766 kg of ice from 0ºC to 32.6ºC? The specific heat of water is 4186 J/kgºC and the heat of fusion for water is 334 kJ/kg.

Answer #1

How much heat transfer in kJ is necessary to raise the
temperature of a 0.347 kg piece of ice from -12.6ºC to 132.1ºC ,
including the energy needed for phase changes? (cice = 2090 J/kgºC,
cwater = 4186 J/kgºC, csteam = 1520 J/kg, Lvap = 2256 kJ/kg, and
Lfus = 334 kJ/kg)

(a)
How much heat transfer (in kJ) is necessary to raise the
temperature of a 0.210 kg piece of ice from −24.0°C to 134°C,
including the energy needed for phase changes? (Assume the
substance remains at a constant volume throughout each stage of the
heating process.)
kJ
(b)
How much time (in s) is required for each stage, assuming a
constant 20.5 kJ/s rate of heat transfer? (Enter your answers as a
comma-separated list. Enter your times in order from...

(A) How much heat transfer (in kJ) is necessary to raise the
temperature of a 0.150 kg piece of ice from −16.0°C to 132°C,
including the energy needed for phase changes? (Assume the
substance remains at a constant volume throughout each stage of the
heating process.)
(B) How much time (in s) is required for each stage, assuming a
constant 21.5 kJ/s rate of heat transfer? (Enter your answers as a
comma-separated list. Enter your times in order from the...

(a)
How much heat transfer (in kJ) is necessary to raise the
temperature of a 0.170 kg piece of ice from −18.0°C to 124°C,
including the energy needed for phase changes? (Assume the
substance remains at a constant volume throughout each stage of the
heating process.)
(b)
How much time (in s) is required for each stage, assuming a
constant 20.5 kJ/s rate of heat transfer? (Enter your answers as a
comma-separated list. Enter your times in order from the...

(a)
How much heat transfer (in kJ) is necessary to raise the
temperature of a 0.150 kg piece of ice from −18.0°C to 128°C,
including the energy needed for phase changes? (Assume the
substance remains at a constant volume throughout each stage of the
heating process.)
kJ
(b)
How much time (in s) is required for each stage, assuming a
constant 21.5 kJ/s rate of heat transfer? (Enter your answers as a
comma-separated list. Enter your times in order from...

How much heat is required to convert solid ice with a mass of
605 g at a temperature of -22.5 °C to liquid water at a temperature
of 65.0 °C? The specific heat of ice is cice = 2100
J/kgK, the specific heat of water is cwater = 4186.8
J/kgK, and the heat of fusion for water is Lf = 334
kJ/kg.
(in J)

How much heat is required to convert solid ice with a mass of
760 g at a temperature of -16.0 °C to liquid water at a temperature
of 76.5 °C? The specific heat of ice is cice = 2100
J/kgK, the specific heat of water is cwater = 4186.8
J/kgK, and the heat of fusion for water is Lf = 334
kJ/kg.

How much heat is required to convert solid ice with a mass of
870 g and at a temperature of -22.5 °C to liquid water at a
temperature of 79.0 °C? (The specific heat of ice is cice = 2100
J/kgK, the specific heat of water is cwater = 4186.8 J/kgK, and the
heat of fusion for water is: Lf = 334 kJ/kg.)

How many joules heat must be added to 2.0 kg of ice at a
temperature of -30 °C to bring it to room temperature 20 °C?
(Specific heat capacity of ice is 2100 J/kg °C).
(Specific heat capacity of water is 4186 J/kg °C).
(Latent heat of water-ice is 3.33x105 J/kg)
Group of answer choices
126.52 kJ
959.44 kJ
4293.44 kJ
668.78 kJ

(a) How much heat transfer is required to raise the temperature
of a 0.750-kg copper pot containing 2.50 kg of water from 30.0ºC to
the boiling point and then boil away 0.750 kg of water?
(b) How long does this take if the rate of heat transfer is 555
W 1 watt = 1 joule/second (1 W = 1 J/s) ? Answer in seconds.

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