Last Oct. 6, the temperature in Quezon City was 78°F and the barometric pressure was 29.9 in. Estimate the following: a. mole fraction of water in the air (4 decimal places) b. dew point (°C) (4 decimal places) C. molal humidity (4 decimal places) d. absolute humidity (4 decimal places) e. percentage humidity (4 decimal places).

a) Calculate the pressure exerted by 5 kg of Carbon dioxide gas placed in a 2000-liter vessel at a temperature of 47°C using Soave modification of Redlick Kwong equation of state if a=0.5. RT p= Vm-b a a Vm (Vm + b) 0.42748 R² T Pe b) Also, determine the pressure of the gas if it behaves ideally in nature. c) If volume occupied by CO2 was reduced by 500L, then calculate the new pressure exerted by 1kg of CO2 if the temperature of the gas changed to 273° K, assuming that CO₂ behaves ideally in nature. (Note: Use the thermodynamic property table are provided) b= 0.08664 RT Pe

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An open graduated cylinder at 25 °C is filled with mercury and water. The height of mercury is 7.0 cm and the water is 5.6 cm. Calculate the pressure at the bottom of the test tube (kPa) if the atmospheric pressure is 755 mm Hg. (Specific gravity of mercury and water are 13.6 and 1.0 respectively). Report answer in kPa

Calculate the pressure(in atm) of the saturated liquid at 71 °C.

A. Calculate pressure in the following cases of static equilibrium : (a) In atmospheric air (assume ideal gas behavior) as a function of elevation z measured in meters, if the temperature changes with elevation according to T(z) = (300 – 0.0065z)K. In addition, compute pressure at altitude z = 2km. (b) On the walls of a balloon containing 0.25kg of air at altitude z = 100m (use the previous result for pressure and density). In addition, compute the radius of the balloon. (c) At the bottom of a cylindrical tank (open to the atmospheric air) of radius R= 1m, containing 6.28 × 10®kg water at 4°C (give the result in psia units). (d) Under the 36-in² area of the shoe of a 170-lbm man. (e) Under the 3-in²-area shoe of a hockey player of 170-Ilbm weight, on ice.