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A steam turbine receives a flow of 10,000 lb of steam per hour and delivers 500 kW in that period. Heat losses from the casing and the turbine bearings may be assumed neglible. Find the change in enthalpy across the turbine if the velocity at entrance is 1200 ft per second, the velocity at exit is 200 ft per second, and the inlet pipe is 10 ft above the exhast. Express your answer in BTU/hr.
A 1.30 g sample of dry ice is added to a 760 mL flask containing nitrogen gas at a temperature of 25.0 degrees Celcius and a pressure of 735 mmHg. The dry ice is allowed to sublime.
A sample of CO2 gas at 795 torr is cooled from 25°C until the new pressure is 125 torr. Calculate the new temperature of the gas.
What is numerical value of the equilibrium constant for the reverse reaction?
If the height of the mercury column in the leveling bulb is 30mm greater than that in the gas buret and the atmospheric pressure is 670 mm, what is the pressure on the gas trapped in the buret?
Find the temperature of 3 grams of chlorine gas in a 1.5 L container with 801 mmHg of pressure.
What is the molar mass of lysine if 750.0 mL of a solution containing 8.60 g of lysine has an osmotic pressure of 1.918 atm? T = 25.0°C
You have given some aqueous solutions as a. LiClO4 b. HClO c. CH2CH3OH d. HClO4 e. HNO3 you just need to Classify each of the given aqueous solutions as a weak electrolyte, non electrolyte, or strong electrolyte ?
Alcohols are less volatile than ethers of the same molecular weight, but the two classes of compounds have approximately the same solubility in water because:
The volume of a sample of nitrogen gas initially at STP is decreased and at the same time the temperature is increased. What happens to the pressure of the sample?
When 0.060 mol of propionic acid, C2H5CO2H, is dissolved in 500 ml of water, the equilibrium concentration of H3O+ ions is measured to be 2.41 x 10-3 M. What is Ka for this acid?
prepare 10 ml of solution that represents a 4 fold dilution of the stock solution
Which reaction below could not be used to create C-C bonds?
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