Question

Specific heats of some substances are given in the following table. Observe carefully and write an-
swer for the following questions.
Specific heat
In cal/g-°C
In J/Kg-K
Lead
0.031
130
Mercury
0.033
139
Brass
0.092
380
Zinc
0.093
391
Iron
0.115
483
Aluminium
0.21
882
ice
0.50
2100
Water
1.00
4180
a) How much heat energy is required to raise the temperature of 1 gram mass of iron by 1°C ?
b) Why the specific heats of ice and water are different?
c) Mention equal amount of specific heat in CGS system to 4.18 x 10 J/Kg-K.
d) What do you mean that “Specific heat of water is 1 cal/g °C”?

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Answer 1

Answer:

• how much heat energy is required to raise the temperature of 1gram mass of iron by 1°c