
Concept explainers
(a)
Interpretation: The number of calories of energy transferred by rise the temperature of 20g of water by
Concept Introduction: Thermal energy is total kinetic energy that combined with motions and mass of particles in a sample of matter measured as heat energy.
(a)

Answer to Problem SI3RE
Number of calories of energy transferred by rise the temperature of 20g of water by
Explanation of Solution
Given mass of water (m) = 20g
Temperature change
Specific heat of water is
The equation of heat is as follows:
Here H is heat, m is mass, C is specific heat and T is temperature.
Put the values in above equation is as follows:
Thus number of calories of energy transferred is 500 cal.
(b)
Interpretation: The number of calories of energy transferred by rise the temperature of 200g of copper by
Concept Introduction: Thermal energy is total kinetic energy that combined with motions and mass of particles in a sample of matter measured as heat energy.
(b)

Answer to Problem SI3RE
Number of calories of energy transferred by rise the temperature of 200g of copper by
Explanation of Solution
Given mass of water (m) = 200g
Temperature change
Specific heat of copper is
The equation of heat is as follows:
Here H is heat, m is mass, C is specific heat and T is temperature.
Put the values in above equation is as follows:
Thus number of calories of energy transferred is 900 cal.
(c)
Interpretation: The number of calories of energy transferred by rise the temperature of 20g of methanol by
Concept Introduction: Thermal energy is total kinetic energy that combined with motions and mass of particles in a sample of matter measured as heat energy.
(c)

Answer to Problem SI3RE
Number of calories of energy transferred by rise the temperature of 20g of methanol by
Explanation of Solution
Given mass of water (m) = 20g
Temperature change
Specific heat of water is
The equation of heat is as follows:
Here H is heat, m is mass, C is specific heat and T is temperature.
Put the values in above equation is as follows:
Thus number of calories of energy transferred is 460 cal.
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