Question

(a) How much heat is required to raise by 13.20°C the temperature of 1.7 kg of water.

(b) How much heat is required to raise by 13.20°C the temperature of 1.7 kg of iron.

Answer #1

a) temperature difference = 13.20 degree C

m = 1.7 Kg

heat required to increase temperature = m * specific heat of water * temperature difference

heat required to increase temperature = 1.7 * 4186 * 13.20

heat required to increase temperature = 92933 J

the heat required to increase temperature of water is 92933 J

b)

temperature difference = 13.20 degree C

m = 1.7 Kg

heat required to increase temperature = m * specific heat of iron * temperature difference

heat required to increase temperature = 1.7 * 450 * 13.20

heat required to increase temperature = 10998 J

the heat required to increase temperature of iron is 10998 J

(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.

(a)
How much heat transfer (in kcal) is required to raise the
temperature of a 0.550 kg aluminum pot containing 3.50 kg of water
from 25.0°C to the boiling point and then boil away 0.650 kg of
water?
(b)
How long (in s) does this take if the rate of heat transfer is
600 W (1 watt = 1 joule/second (1 W = 1 J/s))?

How much heat is required for the following:
a) Raise the temperature from -10°C to 0°C for a 50kg block of
ice.
b) Melt the ice to water
c)Heat the water to 100°C.
d) Evaporate all the water.
e) Compute the total heat supplied.

(a)
How much heat transfer (in kcal) is required to raise the
temperature of a 0.600 kg aluminum pot containing 2.00 kg of water
from 40.0°C to the boiling point and then boil away 0.850 kg of
water?
kcal
(b)
How long (in s) does this take if the rate of heat transfer is
600 W (1 watt = 1 joule/second (1 W = 1 J/s))?
s

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.

4. In total, how much heat is required to raise the temperature
of a 450 g sample of water (c = 4.18 J/oC.g) in a saucepan that has
a heat capacity of 300 J/oC from 200C to 75oC?

How much heat is required to convert 5.0 kg of ice from a
temperature of - 10 C to water vapor at a temperature of 220 F?

Specific heat is the heat necessary to raise the temperature of
1kg of a given material by 1∘C. This specific heat value varies by
material with metals having relatively low specific heat with
organic materials and water being very high. The specific heat of
mercury is 140 J/kg∘C and the specific heat of water is 4190
J/kg∘C.
Part A 106 J of heat energy are transferred to 26.5 g of
mercury. By how much does the temperature increase?
Part B...

How much heat is required to convert 5.0 kg of ice from a
temperature of - 10 0C to water vapor at a temperature of 220
degrees F?

How much heat must be supplied to a 500.0g iron pan to raise its
temperature from 20.0Cto 373.0K?

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