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A 0.50% (w/w) aqueous solution of acetic acid has a density of 0.9989 g mL-1. (a). Calculate the molality and the molarity of the acid in this solution. (b). This solution freezes at -0.1590c. Calculate the degree of dissociation (he fraction of molecules dissociated) for the acid in this solution. (You may assume that the mean ionic activity coefficient has a value of 1). (c) From the degree of dissociation, determine the acidity constant (Ka) for this acid.
A proton in a linear accelerator has a de Broglie wavelength of 144 rm pm. what is the speed of the proton?
Calculate the mass of propylene glycol that must be added to 0.360 of water to reduce the vapor pressure by 2.88 torr at 40°C (Pressure of H2O is 55.3 torr at 40°C ).
What is the balanced equation for the synthesis of Acetylsalic acid (Aspirin) from Methyl salicylate?
At 0°C a 1.00 L flask contains 6.90 10-2 mol N2, 4.40 102 mg O2, and NO at a concentration of 9.00 1018 molecules/cm3. What is the partial pressure of each gas, and what is the total pressure in the flask?
For a solution of hexane (C6H14) and chloroform (CHCI3), would you expect it with respect to Raoult's law to be relatively ideal, to show a positive deviation, or to show a negative deviation
In a separate experiment, it was found that, for fixed temperature and pressure, a 0.100 L sample of this compound takes 1.97 times longer to effuse than does a 0.100 L sample of Ar(g). What is the molecular formula of the compound? draw possible ..
a gas cylinder contains 40.0 L of gas at 45.0C and has a pressure of 650. torr. What will the pressure be if the temperature is changed to 100C?
The heat energy required to melt 1.00 g of ice at 0 degrees C is 333J. If one ice cube has a mass of 62.0 g, and a tray contains 16 ice cubes, what quantity of energy is required to melt a tray of ice cubes to form liquid water at 0 degrees C
Write equations for the folowing seperations. indicate any condition required for the reactions to occur, such as p.H 5. Fe2+ and Cr3+ ions from Ni2= ion
as ph decreases h increases and solubility increases. the effect of ph on solubility is dramatic. a saturated solution
It takes 151 kj/mol to break an iodine-iodine single bond. Calculate the maximum wavelength of light for which an iodine-iodine single bond could be broken by absorbing a single photon.
What is the rate constant for the reverse reaction at the same temperature?
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