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A solution contains 8.90g of KBr in 500.0mL of solution and has an osmotic pressure of 6.99atm at 25 degree C. Calculate the van't Hoff factor for at this concentration.
what is the pressure in atmospheres of the gas inside the container connected to an open-end mercury-filled manometer
the following reaction was monitored as a function of time a goes to bc.the plot of lna versus time yields a straight
For methanol, CH3OH, the molar enthalpy of fusion is 3.16 kJ/mol at the melting point T=175.2 K. Calculate the freezing point depression constant,k, of methanol
A sample of CO2 g in a piston at 7.5 atm and 1090. L is allowed to come to equilibrium against a constant external pressure of 8.3 atm at constant temperature. Calculate the work observed for the volume change in the piston (in kJ).
Write a balanced equation for the following reaction: nitric acid reacts with calcium hydroxide to produce water and calcium nitrate
Why does dropwise addition of acetophenone to a grignard reagent warrant precautions in lab?
Consider a particle of mass m in a uniform gravitational field. Its potential energy is E(h) = mgh,where h is the height above sea level and g is the earth's gravitational constant, g = 9:8 m/s2.
What is the pH of a solution obtained by mixing 50mL of 0.02 M sodium acetate with 40mL of 0.01 M HCl.
A solution of 3-carbethoxycoumarin was refluxed in a solution of NaOH and water. What product(s) would you expect to form from the reaction
What mass of O2 is required for the complete combustion of 68.9 g of pentane, C5H12, to CO2 and H2O?
element is the central atom of sodium chloride, megnesium sulfate, calcium carbonate, ammonia, and hydrogen cyanide?
At an altitude of 45.00 km, the average atmospheric temperature is essentially 0 degrees C. What is the average number of air molecules per cubic centimeter of air at this altitude?
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