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21.77 mL of 2.551 M sulfuric acid are required to completely neutralize a 556.97 m L aliquot of 0.0997 M sodium hydroxide. If after the neutralization, the remaining solution was boiled until only the solid sodium sulfate remained, how many grams of sodium sulfate would be present?
mercury nanometer contains 2 g of Ar. A burner heats it to Pext. at 760 torr. What is the Temperature of the gas in the bulb when the total volume is 3 L and H=76mm
A certain reaction A ? products is second order in A. If this reaction is 10.% complete after 20. s, how long would it take for the reaction to be 90.% complete
A buffer solution is prepared by mixing together equal quantities of formic acid, HCHO2, and sodium formate, NaCHO2. Write equations that show what happens when first acid, and then base, is added to this buffer solution.
Find the molar mass of the compound. The reezing point of benzene is 5.49 degree celcius.
a .350 g sample of a biomolecule was dissolved in 15.0 g of chloroform and the freezing point depression was determined
You have 200 moles of nitrogen in a cylinder,(having a weightless,frictionless piston). The initial temperature is 298k. The diameter is 0.5m. and the piston is at a height of 1m.
Natural K consists of 2 stable isotopes 39K(93.10%) and 41K(6.88%) and one radioactive isotope 40K (0.0118%, t1/2 = 1.27x109 years).
Consider formic acid, HCOOH (Ka= 1.9 x 10^-4) and its conjugate base, HCOO^- with a Kb of 5.3 x 10^-11. Write a net iconic equation for the reaction in aqueous solution between HCOOH and NaOHl, and calculate K.
Calculate the sulfide ion concentration in a saturated solution of hydrogen sulfide with a pH of 0.85. Assume that [H2S]=0.10 mol/L in a saturated solution. Write the overall, balanced net ionic equation for the ionization of hydrogen sulfide
A sample of 1.42 g of Helium and an unweighed quantity of Oxygen are mixed in a flask at room temperature. The partial pressure of Helium is 42.5 torr and of oxygen is 158 torr.
A 100 ml sample of rainwater is neutralized by 22.4 ml of .0122 M NaOH. Assuming that the acid present in sulfurous acid, which resulted from the reaction of SO2 with water, what is the molarity of acid in the rainwater
What is the pH for a buffer solution containing 0.49 molar acetic acid and 0.02 molar potassium acetate
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