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all Globe LTE 10:13 AM @ 69% 12/13 21. An electric blender is used to grind soaked soya beans. The blender runs for 5 minutes, and the power consumption is 100w. The rate of heat loss from the blender is 20w. Determine the change in internal energy of the blender along with its content. A. 36 kJ B. 24 KJ C. 42 kJ D. 2.4 KJ 22. Find the pressure at the 100-fathom depth of water in kPa. A. 1,793.96 kPa B. 1,893.96 kPa C. 1,993.96 kPa D. 1,693.96 kPa 23. Find the depth in furlong of the ocean (SG = 1.03) if the pressure at the sea bed is 2,032.56 kPa. A. I B. 2 C. 3 D. 4 24. Find the mass of carbon dioxide having a pressure of 20 psia at 200'F with 10 f13 volume. A. 1.04 Ibs B. 1.14 Ibs C. 1.24 Ibs D. 1.34 1bs 25. Convert 750R to "K. A. 390.33 K B. 395.33 .K C. 410.33 "K D. 416.33 .K 26. Air compressed adiabatically from 30"C to 100"C. If the mass of air being compressed is 5 kg, find the change of entropy. A. 1.039 KJ/K B. 0.746 KJ/K C. 0 KJ/K D. 1.245 KJ/K 27. Two kilogram of air in a rigid tank changes its temperature from 32"C to 150"C. Find the work done during the process. A. 236 B. 170 C. 195 D. 28. Determine the atmospheric pressure at a location where barometric reading is 740 mmlig and gravitational acceleration is g - 9.7 m/s'. Assume the temperature of mercury to be 10"C, at which the density is 13,570 kg/m'. A. 99.45 kPa B. 97.41 kPa C. 95.44 kPa D. 98.66 kPa 29. The barometer of a mountain hiker reads 930 mbars at the beginning of a hiking trip and 780 mbars at the end. Neglecting the effect of altitude on local gravitational acceleration, determine the vertical distance climbed. Assume g = 9.7 m/s? A. 1274.21 m B. 1288.66 m C. 1267.34 m D. 1583.34 mal Globe LTE 10:13 AM @ 69% 13/13 30. An ideal gas at 0.80 atmospheres and 87C occupies 0.450 liter. How many moles are in the sample? (R = 0.0821 liter- atm/mole"K). A. 0.0002 mole B. 0.0378 mole C. 0.0122 mole D. 0.0091 mole 31. A certain gas at 101.325 kPa and 10 C whose volume is 2.83 m' capacity. Before admission, the storage vessel contained gas at a pressure and temperature of 137.8 kPa and 26C; after admission, the pressure increased to 1171.8 kPa. What should be the final temperature of the gas in the vessel in Kelvin? A. 298.0 B. 319.8 C. 180.0 D. 314.2 32. Ammonia weighing 22 kg is confirmed inside a cylinder equipped with a piston has an initial pressure of 413 kPa at 38"C. If3200 kJ of heat is added to the ammonia until its final pressure and temperature is 413 kPa and 100 C, respectively. What is the amount of work done by the fluid in kJ? A. 667 B. 304 C. 420 D. 502 33. A large mining company was provided with a 3 m' of compressed air tank. Air pressure in the tank drops from 700 kPa to 150 kPa while the temperature remains constant at 28"C. What percentage has the mass of air in the tank been reduced? A. 74.09 B. 72.45 C. 76.56 D. 78.57 34. A submersible pump delivers 350 gpm of water to a height of 5 ft from the ground. The pump is installed 150 ft below the ground level and a drawdown of & ft during the operation. If water level is 25 ft above the pump, determine the pump power. A. 7.13 KW B. 4.86 KW C. 7.24 KW D. 9.27 kW 35. A vacuum pump is used to drain a flooded mine shaft of 20"C water. The pump pressure of water at this temperature is 2.34 kPa. The pump is incapable of lifting the water higher than 16 m. What is the atmospheric pressure? A. 159.30 B. 132.33 C. 196.22 D. 1719 Heone