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Air at 30 celcius and 2 MPa flows at steady state in a horizontal pipeline with a velocity of 25m/s . it passes through a throttle valve where the pressure is reduced to 0.3 MPa . the pipe is the same diameter upstream and down stream of the valve. what is the outlet temperature and velocity of the gas? assume air is an ideal gas with a temperature independant Cp=7R/2 and the average molecular weight of air is 28.8
How many grams and pounds of washing soda are needed to remove the hardness from 500 gallons of water that has a hardness of 150 ppm CaCO3?
dry-cleaning solvent (molecular weight = 146.99 g/mol) that contains C, H, and Cl is suspected to be a cancer-causing agent. When a 0.133 g sample was studied by combustion analysis, 0.239 g of CO2 and 0.0323 g of H2O formed. How many moles of eac..
The following data were obtained on the rate of lactose decomposition as a function of acid and lactose concentration. Using this information, determine the rate law expression and the value of rate constant for the acid-based hydrolysis of lactos..
The partial pressures of gas B dissolved in liquid A at 298 K are listed in the table below. If the vapor pressure of pure B at this temperature is 9500 Kpa, does this solution obey Raoult's Law
Using the quantities 3 grams of salicylic acid and 6ml of acetic anhydride noted in the macro scale procedure and any other necessary data, calculate the theoretical yield in moles and grams of aspirin.
Why is it that benzyl ethyl ether is named as an ether, but 3-chloro-1-ethoxybenzene has the same ether group, yet the group is named as an ethoxy instead?
If you fill the larger tank with oxygen to a pressure of 125atm , to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time. Assume ideal behavior for all gases.
Calculate the mass of silver chloride required to plate 135 mg of pure silver. Silver chloride, often used in silver plating, contains 75.27% Ag.
How many kilograms of CO2 are produced by the complete combustion of 1.00kg of this natural gas?
a solution containing pt4 is electrolyzed with a current of 3.50 a. how long will it take to plate out 80. of the
An oil bath maintained at 50.5oC loses heat to its surroundings at the rate of 4.68 kJ/min. Its temperature is maintained by an electrically heated coil with a resistance of 60 operated from a 110 V line.
For the reaction PCl5-> PCl3+Cl2 kp= 26.03 at 800K. calculate the equilibrium partial pressure for the reactant and product if the initial pressures are PPCl5= .54 atm and PPCl3= .37 atm.
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