Answer:
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Answer:
Amount of heat energy released by light bulb = 25 joules
Explanation:
Given:
Energy receive by light bulb = 100 Joules
Energy released by light bulb as light energy = 75 Joules
Find:
Amount of heat energy released by light bulb
Computation:
We know that, energy is neither be created nor destroys
So,
Using Law of conservation of energy
Energy receive by light bulb = Energy released by light bulb as light energy + Amount of heat energy released by light bulb
100 = 75 + Amount of heat energy released by light bulb
Amount of heat energy released by light bulb = 100 - 75
Amount of heat energy released by light bulb = 25 joules
Answer:
The molar entropy of the evaporation of Trichlorofluoromethan is 83.516 J/molK.
Explanation:
Entropy :It is defined as amount of energy which is unable to do work or the measurement of randomness or disorderedness in a system.
![S=\frac{Q}{T(Kelvins)}](https://tex.z-dn.net/?f=S%3D%5Cfrac%7BQ%7D%7BT%28Kelvins%29%7D)
Molar heat of molar vaporization of Trichlorofluoromethane = 24.8 kJ/mol
Temperature at which Trichlorofluoromethan boils , T= 296.95 K
The molar entropy of the evaporation of Trichlorofluoromethan :
![=\frac{24.8 kJ/mol}{296.95 K}=0.083516 kJ/mol K = 83.516 J/molK](https://tex.z-dn.net/?f=%20%3D%5Cfrac%7B24.8%20kJ%2Fmol%7D%7B296.95%20K%7D%3D0.083516%20kJ%2Fmol%20K%20%3D%2083.516%20J%2FmolK)
The molar entropy of the evaporation of Trichlorofluoromethan is 83.516 J/molK.
Answer: as the temperature increases, the kinetic energy of the molecules increases
Explanation: The kinetic energy of the molecules is the energy possessed by virtue of motion of the particles.
Kinetic energy of the particles is directly proportional to the temperature of the gas.
![K.E=\frac{3RT}{2}](https://tex.z-dn.net/?f=K.E%3D%5Cfrac%7B3RT%7D%7B2%7D)
where T= temperature
R= gas constant
Thus if the temperature is increased, the molecules start moving more randomly and gain kinetic energy.