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A battery is constructed based on the oxidation of magnesium and the reduction of Cu2+. The initial concentrations of Mg2+ and Cu2+are 1.0*10^-4 M and 1.4 M, respectively, in 1.0 Lhalf-cells.What is the voltage of the battery after delivering 5 amperes for 8hours?
You have a solution of 0.085 M HNO2 and 0.15 M KNO2 (Ka for HNO2 = 4.5 * 10-4) what is the pH
Write a paper on an article and it shows many different compounds and need a better understanding of where each originated and what steps were made in their synthesis.
Calculate the pH of a solution made from dissolving 1.00 moles of benzoic acid with 1.00 moles of sodium benzoate in enough water to make 750ml of solution.
A Cr^{3 + } aq solution is electrolyzed, using a current of 7.50 A}. What mass of Cr}( s) is plated out after 1.80 days? also What amperage is required to plate out 0.300 mol Cr from a Cr^{3 + } solution in a period of 7.20 h
An acqueous solution of Kl has a freezing point of -1.80 C and an osmotic pressure of 26.0 atm at 25.0C. Assume Kl completely dissociates in water. What is the density of the solution
If 2.50 g CuSO4 are dissolved in 8.0 x 102 mL of 0.25 M NH3, what are the concentrations of Cu2+, Cu(NH3)42+, and NH3 at equilibrium
What is the maximum quantity of NaC2H3O2 that can be added to 200.0 mL of this solution before precipitation of begins?
What is the maximum amount of CO2 (44.0095 g/mol) which could be formed from 16.42 g of CO (28.0101 g/mol) and 0.24 mol of O2 (31.9988 g/mol)? Answer in units of mol
what mass of barium is produced when molten BaCl2 is electrolyzed by a current of 3.30 105 A for 7.00 hours?
The fact that boiling point of a pure solvent is lower than the boiling point of a solution of the same solvent is a direct consequence of the. freezing-point depression of the solution.
A solution is prepared by dissolving 43.7 g cesium chloride in 60.0 g water. The volume of the solution is 63.3 mL.
we have a solution that contains 0.022 m ca2 and 0.014 m mg2. we will use potassium hydroxide to selectively
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