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Suppose you have a solution that might contain any or all of the following cations: Cu2+, Ag+, Ba2+ and Mn2+. Addtion of HCl causes a precipitate to form. After the precipitate is filtered off, H2SO4 is added to the supernate and another precipitate forms. This precipitate is filtered off, and a solution of NaOH is added to the supernatate liquid until it is stongly alkaline. No precipitate is formed. Which ions are present in each of the precipitates? Which cations are not present in the original solution?
The first three reactions of the b oxidation pathway are similar to three reactions in the Kreb's cycle. Which three and why are they similar
What is the enthalpy of this reaction. Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
The binding energy of electrons to a chromium metal surface is 7.21 × 10-19 J. What is the longest wavelength of light (in nm) that will eject electrons from chromium metal
How many moles of benzoic acid did you use in this reaction. How many moles of methanol did you use. Why was this particular molar ratio of reactants chosen
If the average number of drops/ml = 73.0 and the overall average diameter of oleic acid film = 38.0 cm, what would be the calculations for the following:
How many liters of F2 at STP could be liberated from the electrolysis of molten NaF under a 2.16 ampere current
Imagine that your water heater has broken, but you want to take a bath. You fill your bathtub with 25 kgof room-temperature water (about 25c ). You figure that you can boil water on the stove and pour it into the bath to raise the temperature The ..
create a data table to record your data from the procedure. be sure that the data table is neat and organized and that
A blast furnace is the main unit in the production of iron from iron ore. One can view the blast furnace as a process in which the principal desired reaction is:
Calculate the quantity of energy produced per gram of reactant for the fusion of -3 (atomic mass = 3.016049 ) with -1 (atomic mass =1.007825 ) to form -4 (atomic mass = 4.002603
A solution is prepared by mixing 13.00ml of 0.0021M (aq) Hg2(NO3)2 with 25.0ml of 0.015M HCl. Assume that volumes are additive.
Determine how many grams of Potassium Sulfate can be formed from 150.0 grams of potassium hydroxide with sufficient sulphuric acid H2SO4?
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