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How many grams of Ca metal are produced by the electrolysis of molten CaBr2 using a current of 30.0 amp for 10.0 hrs?
Calculate the equilibrium constant Kp for the reaction and the temperature above which the reaction favors the formation of CO and H20
Suppose your thermometer read consistently 1.0 o C lowered throughout both parts in the colligative properties lab. What effect would that have on your experimental value for the molar mass of your unknown solute?
Do you experimental data substantiate the rule of thumb regarding the effect on the reaction rate of a 10-degree increase in reaction temperature. Briefly explain
The osmotic pressure of a aqueous solution of a given polymer with mass concentration 0.300 g/mL is 10.0 torr at 298 K. Estimate the molar mass of the polymer.
Consider a solution formed by mixing 51.0 mL of 0.100 M H2SO4, 27.0 mL of 0.100 M HOCl, 25.0 mL of 0.200 M NaOH, 25.0 mL of 0.100 M Ca(OH)2, and 10.0 mL of 0.150 M KOH. Calculate the pH of this solution.
What volume in mL of concentrated nitric acid (72.0% HNO3 (w/w), sp. gr. 1.42) is required to prepare exactly 3.85 L of 0.330 M HNO3
A solution contains 0.50 M Cl^- and 0.50 M Br^- ions. Solid AgNO3 is added without changing the volume of the solution. What is the Br^- concentration when AgCl(s) first begins to precipitate?(Ksp for AgCl = 1.8 x 10^-10 and Ksp for AgBr = 5.1 x 1..
What are the concentrations of HSO4-, SO42-, and H+ in a 0.20 M KHSO4 solution? (Hint H2SO4 is a strong acid; Ka for HSO4- = 1.3x10-2)
A 1.992g sample of octane, C8H18, is burned in a calorimeter that has a calorimeter constant of 144 J/celcius and contains 750.0g of water. the temperature of the water rose from 14.73 celcius to 42.78 celcius. Determine the enthalpy of combustion..
Predict whether the following compounds will undergo the benzoin condensation, faster slower than benzaldehyde or give no reaction. You must think about the intermediate and the nucleophile.
A concentration cell consists of two H2/H+ electrodes. Electrode A has H2 at 0.83 atm bubbling into 0.29 M HCl. Electrode B has H2 at 0.56 atm bubbling into 1.8 M HCl.
What do understand by the terms a) Empirical Formula b) isomerism and what conclusions can you draw from the following observations about the chemical nature of the organic liquid D?
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