What is the energy balance to open system? Options: A . &nbspEnergy in the system is constant B . &nbspMatter in the system is constant C . &nbspMatter is constant energy is variable D . &nbspBoth matter and energy are variable

What is the energy balance to open system?

Question

What is the energy balance to open system?

Options:

A . Energy in the system is constant

B . Matter in the system is constant

C . Matter is constant energy is variable

D . Both matter and energy are variable

Answer: Option D
Answer: (d).Both matter and energy are variable

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Question 1. 1 Kg of water is pumped to a height of 1 m, the enthalpy is changed by 5 J/Kg, and work done by the motor is 25 J/Kg, as....insulated what is the change in internal energy of water?

Question 2. 10 Kg of water is pumped to a height of 2 m, the enthalpy is changed by 15 J/Kg, and work done by the motor is 50 J/Kg, ....insulated what is the change in internal energy of water?

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Question 4. 5 Kg of water is pumped to a height of 5 m, the enthalpy is changed by 10 J/Kg, and work done by the motor is 100 J/Kg, ....insulated what is the change in internal energy of water?

Question 5. 2 Kg of water (CP = 0.15 J/Kg°C) is pumped to a height of 0.1 m, work done by the motor is 10 J/Kg, and heat libera....final temperature of water if the initial temperature was 27°C?

Question 6. 5 Kg of water (CP = 1 J/Kg°C) is pumped to a height of 0.5 m, work done by the motor is 50 J/Kg, and heat liberated....final temperature of water if the initial temperature was 0°C?

Question 7. 1 Kg of water (CP = 0.4 J/Kg°C) is pumped to a height of 2 m, work done by the motor is 50 J/Kg, and heat liberated....final temperature of water if the initial temperature was 25°C?

Question 8. 1 Kg of water (CP = 0.5 J/Kg°C) is pumped to a height of 1 m, work done by the motor is 20 J/Kg, and heat liberated....final temperature of water if the initial temperature was 20°C?

Question 9. 1 Kg of water (CP = 0.5 J/Kg°C) is pumped to a height of 0.5 m, work done by the motor is 40 J/Kg, and heat liberat....final temperature of water if the initial temperature was 10°C?

Question 10. In the reaction 2H₂ + O₂ -> 2H₂O, if the heat liberated is 50 J, what is the heat of formation of H₂O?....

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