19. 4.5 lbm of water at 158 oF is mixed with 8.3 lbm of water at...

19. 4.5 lbm of water at 158 ^oF is mixed with 8.3 lbm of water at 30.9 ^oF. If the specific heat of water is 0.8 BTU/lbm-^oR, find the resulting temperature of the mixture in ^oF.

State your answer to one decimal place. Example: 63.5

20. 2.4 lbm of water at 136 ^oF is mixed with 9.1 lbm of water at 44.9 ^oF. If the specific heat of water is 0.8 BTU/lbm-^oR, find the sum of the change in entropy, in BTU/^oR, for the 2.4 lbm of water and 9.1 lbm of water.

State your answer to four decimal places. Example: 0.6357

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Expert Solution

samet mamat answered 2 years ago

The mass of a high speed train is 4.5×105kg, and it is traveling forward at a velocity of 8.3×101m/s.

The mass of a high speed train is 4.5×105kg, and it is traveling forward at a velocity of 8.3×101m/s. Given that momentum equals mass times velocity, determine the values of m and n when the momentum of the train (in kg⋅m/s) is written in scientific notation.

A piston encloses 1 lbm of water in an initial volume of 0.3 ft^3. The initial...

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A stream of saturated water at 54 o C at 25 lbm/min and ammonia solution (50...

A stream of saturated water at 54 o C at 25 lbm/min and ammonia solution (50 wt%) at 150 lbm/min are fed to a boiler at 1 atm. The enthalpy of the ammonia solution relative to the reference conditions is 125 BTU/lbm. The liquid and vapor products are leaving the system. The liquid composition is to be 13 wt% NH3. Determine the rate at which heat must be transferred to the system. Includes diagram, mass balance, energy balance.

50 ml of hot water was mixed with 50ml of cold water in a calorimeter. The...

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Suppose 1.16 kg of water at 11.6 ◦C is mixed with 1.7 kg of water at...

Suppose 1.16 kg of water at 11.6 ◦C is mixed with 1.7 kg of water at 81◦C. After equilibrium is reached, the mixture has an uniform temperature of 52.8517◦C. What is the change in entropy of the system? The specific heat of water is 4186 J/kg · K. Answer in units of J/K.

price # of bids 108 12 131 13 136 16 142 17 158 19 1. What...

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A 50.0-g sample of liquid water at 25.0°C is mixed with 35.0 g of water at...

A 50.0-g sample of liquid water at 25.0°C is mixed with 35.0 g of water at 89.0°C. The final temperature of the water is ________°C.

4.5kg of water at 25?C is mixed with 4.5kg of water at 58?C in a well-insulated...

4.5kg of water at 25?C is mixed with 4.5kg of water at 58?C in a well-insulated container.Estimate the net change in entropy of the system.

7.1 g of water ice at 268.4 K is mixed with 234 g of liquid water...

7.1 g of water ice at 268.4 K is mixed with 234 g of liquid water at 304.7 K in an insulated container under an external pressure of 1.00 bar. Answer the following questions assuming that the physical properties of water and ice are constant over the range of interest. Physical properties for water and ice are given below: Cp,m,ice = 1.95 J g-1 K-1 ΔHfusion,ice = 333.4 J g-1 Cp,m,water = 4.18 J g-1 K-1 Melting point of ice:...

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