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Rank the following elements in order of increasing ionization energy and increasing atomic size: P, O, S.
A sample of a liquid from an unlabeled bottle was subjected for analysis: MS showed that M+ has an m/z of 89 and IR displayed bands at 2995-2840 cm-1, and 1562, and 1425. Identify the functional group in the molecule and provide 2 possible structu..
Sulfuric acid is supplied as a concentrated liquid. A bottle was assayed and found to have a density of 1.84 g/mL and a purity of 97.0%. The molecular weight of H2SO4 is 98.0 g/mol. What is the molarity of this solution
The world record for the marathon (26.2 miles) is 2:03:38 (hrs:min:s). Assuming constant velocities, calculate the corresponding wavelengths for each runner (be sure to label which is which).
Which of these elements occupies a position on the periodic table that is not entirely consistent with its chemical properties
What mass of barium is produced when molten barium chloride is electrolyzed by a current of 2.50 x 10^5 A for 6.00 hours
An iodine solution of unknown molarity was titrated against a 0.001M solution of S2O3^2-. The blue black iodine-starch complex just disappeared when 20.2 mL of thiosulfate was added. What is the exact molarity of the I2 solution.
A 1.00 g sample of an unknown acid required 17.0 mL of .650 M NaOH to neutralize. What is the molar mass of the unknown acid?
The resulting standard solution was used to titrate 25.0 mL of an unknown diprotic acid. If 18.50 mL of the standard NaOH solution was needed to reach the end point, What is the concentration of the unknown diprotic acid solution
A 32.0-g sample of water at 260. K is mixed with 47.0 g water at 300. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
a solution is prepared from 2.50 g of an unknown compound and 25.0 g of benzene c6h6. the freezing point of this
A bioengineer preparing cells for a cloning experiment bathes a small piece of rat epithelial tissue in a TRIS buffer, (HOCH2)3CNH2. The buffer is made by dissolving 43.0 g TRIS (pKb = 5.91) in enough 0.095 M HCl to make 1.00 L of solution. What i..
a solution of water kb0.512 c and glucose freezes at 4.15. what is the molal concentration of glucose in this solution?
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