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titrated Acetic Acid with Sodium Hydroxide. The endpoint measured 27.9 mL. The NaOH concentration was figured out by titration of a primary standard KHP. The resulted concentration was ~.2651 M NaOH
If 145 grams of potassium nitrate were added to water to make 1,500 mL of solution, what would be the molarity of the resulting solution?
A solution is made by dissolving 0.040 moles of the weak acid HA in water to make 1.00 L of a solution whose pH is 4.90. Calculate the Ka for the acid.
Calculate the work, heat, energy and enthalpy change upon: a) expansion by 3.3 L at p=const (isobaric). b) isothermal expansion by 3.3. L against a constant external pressure of 30.0 kPa c) reversible isothermal expansion by 3.3 L.
Calculate the PH of a 0.015 Solution of carbonic acid, and what is the concentration
For an elderly patient with impaired renal function, the dose is reduced to 250 mg every 6 hours. Calculate the reduction in the daily dose, in milligrams.
At what tempature should 0.5 moles of nitrogen be held to maintain a pressure of 125 kpa in a 1.0L closed sealed container
Calculate the total pressure (in atm) of a mixture of 0.0270 mol of helium, He, and 0.0200 mol of oxygen, O2, in a 4-L flask at 20°C. Assume ideal gas behavior.
What concentration of Benzoyl peroxide (k_d = 1.45 * 10^(-6) L/mol-s, 60 deg C) would be needed to polymerize a 1.00 M solution of styrene to a molecular weight of 2500
The binding energy of electrons to gold is 492 kJ/mol. What is the longest wavelength of light shone on gold that will cause electrons to be ejected?
Analysis of a metal chloride XCl3 shows that it contains 64.3% Cl by mass. Calculate the molar mass of X
The volume of blood in the body of a certain deep-sea diver is about 6.00 L. Blood cells make up about 55% of the blood volume, and the remaining 45% is the aqueous solution called plasma.
an inert gas has a volume of 941 ml at temperature 28 oC and pressure 675 Torr. What volume does the gas occupy at standard ambient temperature and pressure (SATP)?
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