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An unknown contains citric acid, C6H8O7, a tribasic acid, and potassium chloride. If 2.135g of unknown requires 19.90 mL of 0.688 NaOH for complete neutralization of all reactive protons, calculate the percent by mass of citric acid in the sample. Indicate clearly your calculations and reasoning.
Calculate the solubility (in grams per 1.00 102 mL of solution) of magnesium hydroxide in a solution buffered at pH = 10.
Propane gas, C3H8, reacts with oxygen to produce water and carbon dioxide. Propane has a density of 2.02g/L at room temperature. Express the answer as a chemical equation. Identify all of the phases in the answer.
write a electrn configuration for an octahedral complex, write the electron configuration for [RhCl6]^-3 in terms of MO labels for ground electronic state.
A reaction in which and react to form products is zero order in , one-half order in , and second order in .By what factor does the reaction rate change if is doubled
In some communities, products that contain phosphates are banned from sale because of pollution of well water, streams, and coastal bay. How could these salts enter the environment. How could the authorities test for the presence of phosphates in ..
Calculate the pressure exerted in the closed end of an apparatus. If the atmospheric pressure 720 torr and the height of the water column is 22.3cm.
Suppose that 0.3 g of AlOOH (FM 59.99) plus 150 mL of 3M KOH are diluted to 1L to give the same species produced by Al(OH)3. Write mass balance equations for aluminum and potassium.
in reacting anthracene and maleic anhydride, does the structure of the product make sense in terms of the aromaticity of anthracene and the product?
Calcuate the molalities of MgSO4, Mg2+, and SO4 in a 0.05000m solution of MgSO4 at 25 degree and at 250 degree. Find the appropriate log K's in Soltherm
The average concentration of calcium ion in seawater is 412 mg of calcium ion per kg of seawater. What is the molarity of the calcium ion if the density of the seawater is 1.025 g/mL?
A 0.894-g sample of gas occupies 125 mL at 60. cm of Hg and 25C. What is the molar mass of the gas.
What is the volume of a gas at T=35.0C and P=675 torr if the same sample occupied 42.6L at T=-27.3C and P=1.000 atm.
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