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Use the Henderson-Hasselbach equation to calculate the pH of a buffered solution that has a propionic acid CH3CH2CO2H concentration of 0.060 M ad potassium propinate CH3CH2CO2K concentraton of .090 M.Ka=1.3x10^-5
Calculate the percent composition of copper in the hydrate CuSO4.5H2O based on atomic weight data.
Enough of a monoprotic acid is dissolved in water to produce a 0.0137 M solution. The pH of the resulting solution is 6.48. Calculate the Ka for the acid.
calculate the concentration of the hydronium ion in a solution prepared by mixing equal volumes of .050 molar HOCL and .020 molar NaOCl
What is the molar composition of the dense gas and it's chemical formula? What is the element name and identity and atomic mass of the grey substance
The nuclide Pb-210 undergoes three successive decays (beta, alpha, and beta, respectively) to form a stable nuclide. What are the three nuclides which form from Pb-210 in this decay series
Arrange the molecules in order of decreasing boiling point. Rank the molecules from highest boiling point to lowest boiling point.
A rectangular block has dimensions 2.9 cm 4.0 cm 10.0 cm. The mass of the block is 625.0 g. What is the volume of the block?
Calculate the relative proportions of two conformers A and B in a compound, assuming that an energy of 15.5 kj/mol is required to go from
10.08g of potassium chlorate, KClO3 is heated to decomposition according to the following equation. How many grams of O2 gas will be produced?
how many moles are there of the reducing agent. What is the molarity of the reducing agent? Oxidizing agent --> KMnO4 Reducing Agent --> Fe +2 Volume of Fe +2 = 25 mL Concentration of KMnO4 = 0.1290 M
an irregular shape of metal has a mass of 54.6 grams and displaces 2.83 cm^3 of water when dropped into a graduated cylinder filled with water. What is the identity of the pure metal?
neutral compound show traces of an acid as an impurity wheras the acid might not show any traces of a neutral compound?
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