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A 3.664-g sample of a monoprotic acid was dissolved in water. It took 20.27 mL of a 0.1578 M NaOH solution to neutralize the acid. Calculate the molar mass of the acid.
Assume you have a mixture of gases that contains 3.50 L of helium, some argon at 1.03 atm, and some neon at 27 degrees C. For which gas(es)
at a certain temperature kc 55 and a reaction vessel contains a mixture with the following concentrations so3 0.85 m
A 4.16 g sample of ascorbic acid is titrated with 0.83 M red dye. What volume of red dye is required to reach the endpoint? Molar mass of red dye =267.08 g/mol; molar mass of ascorbic acid =176.12 g/mol
Calculate DG0 for the reaction below. The standard molar entropy change for the reaction at 298 K is -287.5 J/mol·K.
dissolved in 200 mL of solution. What is the pH of the solution? pKa1 = 6.37 and pKa2 = 10.25.
f seawater contains 3.5 mass % of dissolved salts, how many kilograms of salts are present in 2.2 mi^3 of seawater? (1mi = 1609m; density of seawater = 1.025g/cm^3).
A solution is prepared by dissolving 25.8 grams of magnesium chloride (MgCl2) in 250.0 mL water. Calculate the molality of the chloride ion in the solution.
What will the following peptides look like structurally at pH 1, pH 7, pH 12. (You will draw 3 structures for each.)
A sample of an unknown gas effuses in 14.7 min. an equal volume of h2 in the same apparatus under the same conditions effuses in 2.42 min. what is the molar mass of the unknown gas
The vapor pressure of CCl4 (MM = 153.81g/mol) at 65 degree celsius is 504mmHg. How many grams of C10H8 (MM= 128.2gmol) must be added to 25.00g of CC4 so that the vapor pressure of CCl4 is 483mmHg?
Why do the metals Co, Rh, and Lr form octahedral complexes (rather than tetrahedral or square planar complexes)?
Based on the fact that the alloy has an HCP crystal structure, what general processing technique would you consider for the processing of the turbine blade? Explain your choice.
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