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A cylinder of free volume 10ft3 is divided into two compartments by a piston. Originally the piston is at one end and the cylinder contains 2lb of steam at 150C. Air from a supply main at 200lb/in2 and 15C is then admitted slowly via a throttle valve to the other side of the piston. Estimate the temperature of the air when pressure equilibrium is reached.
Neglect any heat loss from the cylinder as well as assume no heat transfer across the piston. Define clearly any assumption made. [Note. Use Steam Tables]
Calculate the theoretical pH of the solution when beginning with 10.00 mL of 0.200 M HCl and dilute it to 50.00 mL with distilled water.
Calculate the mass of carbon dioxide released when 255 g of copper carbonate [molar mass = 123.5 g/mol] is heated (assuming that the reaction goes to completion). The molar mass of CO2 is 44.0 g/mol.
a 0.0571g sample of platinum sulfate was dissolved in dilute HCl and treated with 10% BaCl2 solution. The BaSO4 precipitate weighed 0.0801g. Determine the formula of this sulfate of platinum. The atomic number of platinum Pt, is 78.
you want a solution that will buffer the addition of either 10 micro moles of acid or 10 micro moles of base. total buffer concentration is equal to the concentration of the acid plus the concentration of salt in the acid. which of the following b..
calculate the concentrations of h+, oh-, f-, and undissociated hf molecules in 0.10 M hf. Ka for HF is 7.1x10^(-4).
an iron ore sample contains fe2o3 together with other substances. reaction of the ore with co produces iron metal fe2o3
How many grams of solute are needed to make each of the following solutions?296.5 mL of 0.333 M barium acetate
Solve an equilibrium problem (using an ICE table) to calculate the of each of the pH following solutions.
What mass of CaCl2, when dissolved in 100.00g of water, gives an expected freezing point of -5.0 degrees celcius; CaCl2 is ionic?
if 5.0 of nitrogen at 12 degree Celsius and 1.30 atm pressure reacts with the same volume of hydrogen at the same temperature and pressure, what volume of ammonia is obtained at that temperature and pressure?
when 9.00 g of Al react with an excess of H3PO4, 30.0 g of AlPO4 are prodecued. What is the percentage yield of this reaction?
in flushing and cleaning columns used in liquid chromatography to remove adsorbed contaminants a series of solvents is
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