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Compute the molar concentration of OH- ions in a 0.525 M solution of hypobromite ion BrO-; Kb=4.0*10^-6. Explain what is the pH of the solution?
Using the following data, a researcher heated a 250.0 gram sample of pure uranium metal in excess oxygen. The resulting oxide was determined to weigh 294.9 grams. Determine the empirical formula that the researcher obtained for the oxide using the..
Formic acid, shown below, is a monoprotic acid, circle the acidic hydrogen. write the formula of the conjugate base after the acidic hydrogen is lost?
What is the final concentration of copper in the flask b)what is the uncertainty in the value of the copper concentration?
A segment of a DNA strand has base sequence of C-G-A-T-T-G-C-A. What is the base sequence of the other complementary strand of the double helix
Explain the solubility of caffeine in water in 2.2mg/mL at 25C and 670 mg/mL at 100C. Explain how mL of boiling water would it take to dissolve 23g of caffeine? Explain if the solution was cooled to 25C, Explain how many grams of caffeine would re..
State formulas and name the hodgepodge of compounds resulting from matching all cations with all anions for each set.
A sample of 2.2 mol O2 (Cop,m = 29.355 J K-1 mol-1) is originally confined in 24 dm3 at 270 K and then undergoes adiabatic expansion against a constant pressure of 600 Torr until the volume has increased by a factor of 3.0.
Imagine you want to determine the binding constant for a reaction. You know you will need to generate data to calculate the binding constant.
Calculate the enthalpy of reaction for the combustion of methane gas, CH4 to form CO2(g) + H20(l)
question a gas is compressed at a constant pressure of 0.270 atm from a volume of 8.00 l to 5.00 l. in the process 400
aluminum and 351 mL of 0.621 M solution of copper (II) chloride, how much of each substance will be present at the end of the reaction. If 10.6 g of the solid is formed, what is the % yield of the reaction?
A 25.0-mL sample of 0.35 M HCOOH is titrated with 0.20 M KOH. What is the pH of the solution after 25.0 mL of KOH has been added to the acid? Ka = 1.77 × 10-4
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