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The heat of vaporization of acetone is 32.0 kJ/mol. The normal boiling point of acetone is 56.5 C. What is the vapor pressure (torr) of acetone at 47.6C?
what is the hydrogen ion concentration of this solution? What volume of .250 M KCl will completely react with 50.0 mL OF .115 m Pb(NO3)2?
Given 867 mL of a buffer solution that is 0.532 M methylamine and 0.86 M methylammonium chloride, calculate the pH of this solution after the addition of 1.14 g sodium hydroxide. The Kb of methylamine is 4.4x10-4
A 20.0 mL sample of gastric juice was taken from a patient suspected of having hypochloridia (low stomach acid). The sample was taken several hours after a meal so there was no ingested food or drink
Given that the tablet contains only calcium carbonate and an inert binder, write balanced molecular and net ionic equations for both reactions that take place. Calculate the mass and mass percent of calcium carbonate n the tablet
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Problem- What mass of ammonium chloride should be added to 2.65 L of a 0.15M NH3 in order to obtain a buffer with a pH of 9.55
A physiological saline solution contains 154mEq/L each of Na+ and Cl-. How many moles each of Na+ and Cl- are in 0.600L of the saline solution?
A saturated solution of CaCO3 was made under an inert atmosphere (containing just N2) this solution was brought to the natural lab and stirred . A white cloudy precipitate was observed . explain the observation including relevant equilibria
The acceptable limit for mercury in drinking water is 2ppb. Does this correspoond to mercury in its elemental form (Hg) or in its ionic form (Hg^2)
how many moles of no2 gas can be produced from 45.5 g of o2 gas in the following reaction? show your work in the answer
What should the molar concentrations of benzoic acid and sodium benzoate be in a solution that is buffered at a pH of 5.00 and has a freezing point of -2.0?
Certain volumes of nitrogen gas and hydrogen gas react to form 4L of ammonia gas, according to the reaction shown below.
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