Part 1
A cylinder contains 12 litres of oxygen at 20 C and 15 atm pressure. The temperature of the gas is raised to 35 C and its volume increased to 17 litres. What is the final pressure of gas (in atm) ?
13
Sep
A cylinder contains 12 litres of oxygen at 20 C and 15 atm pressure. The temperature of the gas is raised to 35 C and its volume increased to 17 litres. What is the final pressure of gas (in atm) ? A cylinder contains 12 litres of oxygen at 20 C and 15 atm pressure. [...]
A vessel has 6 g of hydrogen at pressure P and temperature 500 K. A small hole is made in it so that hydrogen leaks out. How much hydrogen leaks out if the final pressure is P/2 and temperature falls to 300 K?
13
Sep
A vessel has 6 g of hydrogen at pressure P and temperature 500 K. A small hole is made in it so that hydrogen leaks out. How much hydrogen leaks out if the final pressure is P/2 and temperature falls to 300 K? Pressure versus temperature graph of an ideal gas is as shown in [...]
Pressure versus temperature graph of an ideal gas is as shown in figure. Density of the gas at point A is ρ0. Density at point B will be:
12
Sep
Pressure versus temperature graph of an ideal gas is as shown in figure. Density of the gas at point A is ρ0. Density at point B will be: Pressure versus temperature graph of an ideal gas is as shown in figure. Density of the gas at point A is ρ0 . Density at point B [...]
A sample of 100 g water is slowly heated from 27 C to 87 C. Calculate the change in the entropy of the water specific heat capacity of water = 4200(J)/(kg-K)
12
Sep
A sample of 100 g water is slowly heated from 27 C to 87 C. Calculate the change in the entropy of the water specific heat capacity of water = 4200(J)/(kg-K) A sample of 100 g water is slowly heated from 27 C to 87 C. Calculate the change in the entropy of the water [...]
A freezer has coefficient of performance 5 %. When 3.6×10^6 J work is done on the freezer, what mass of water at 0 C is converted to ice cubes at 0 C?
12
Sep
A freezer has coefficient of performance 5 %. When 3.6×10^6 J work is done on the freezer, what mass of water at 0 C is converted to ice cubes at 0 C? A freezer has coefficient of performance 5 %. When 3.6×10^6 J work is done on the freezer what mass of water at 0 [...]
An ideal monoatomic gas goes through a cyclic process consisting two isochoric and two isobaric lines. The absolute temperature of the gas rise two times both in isochoric heating and isobaric expansion. If number of moles are three, find efficiency of cyclic process.
12
Sep
An ideal monoatomic gas goes through a cyclic process consisting two isochoric and two isobaric lines. The absolute temperature of the gas rise two times both in isochoric heating and isobaric expansion. If number of moles are three, find efficiency of cyclic process. Heat is supplied to a diatomic gas at constant pressure. The ratio [...]
A Carnot engine having a perfect gas gas the working substance is driven backwards and is used for freezing water already at 0 C. If the engine is driven by 500 W electric motor with an efficiency of 60% how long will it take to freeze 15 kg of water? The working temps of the engine are 15 C and 0 C. The system involves no energy losses. Given latent heat of ice =333×10^(3)J kg^(-1).
12
Sep
A Carnot engine having a perfect gas gas the working substance is driven backwards and is used for freezing water already at 0 C. If the engine is driven by 500 W electric motor with an efficiency of 60% how long will it take to freeze 15 kg of water? The working temps of the [...]
Two Carnot engines A and B are operated in series. The first one A receives heat at 900K and rejects it to a reservoir at T K. The second engine B receives the heat rejected by the first engine and rejects it to a heat reservoir at 400K. Calculate the value of T, when the efficiency of two engines is the same.
12
Sep
Two Carnot engines A and B are operated in series. The first one A receives heat at 900K and rejects it to a reservoir at T K. The second engine B receives the heat rejected by the first engine and rejects it to a heat reservoir at 400K. Calculate the value of T, when the [...]
A perfect Carnot engine utilizes an ideal gas the source temperature is 500 K and sink temperature is 375 K. If the engine takes 600 kcal per cycle from the source, calculate
12
Sep
A perfect Carnot engine utilizes an ideal gas the source temperature is 500 K and sink temperature is 375 K. If the engine takes 600 kcal per cycle from the source, calculate A perfect Carnot engine utilizes an ideal gas the source temperature is 500 K and sink temperature is 375 K. If the engine [...]
P-V curve of a diatomic gas is shown In the figure. Find the total heat given to the gas in the process A ⟶ B ⟶C.
12
Sep
P-V curve of a diatomic gas is shown In the figure. Find the total heat given to the gas in the process A ⟶ B ⟶C. P-V curve of a diatomic gas is shown In the figure. Find the total heat given to the gas in the process A ⟶ B ⟶C. September 12, 2021 [...]