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What principle explains the solubility of a substance in aqueous acid or aqueous base
A 30.36 gram sample of a hydrate of MnSO4 was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, 27.12 grams of the anhydrous compound remained. What is the formula of the hydrate?
Calculate boiling point of a solution of 500.0 g of ethylene glycol dissolved in 500.0 g of water. kf = 1.86 c/m and kb = 0.512 c/m. Use 100 degrees celsius as the boiling point of water.
Suppose that a sample of gas occupies 192 mL of volume at 25C and a pressure of 206 torr. What would be the volume if the pressure were changed to 506 torr at 25C.
What is the concentration of protein A in the filtrate, as well as the concentrations of proteins B and C in the filtrate and retentate?
Zinc metal reacts with yellow crystals of sulfur in a fiery reaction to produce a white powder of zinc sulfide. A chemist determines that 65.4 g of zinc reacts with 32.1 g of sulfur. How many grams of zinc sulfide could be produced from 12.0 g of ..
a star is estimated to have a mass of 2*10´36 kg. Assuming it to be a sphere of average radius 7 * 10´5 km, calculate the average density of the star in units of grams per cubic centimeter.
Write a brief procedure that would have been used to carry out the titration. Just include the key steps (terms and measurements). c. What was the average volume of Ca(OH)2 used? d. Calculate the concentration of the HCI sample.
Working on a lab report and need to answer the question: why would any insoluble hydroxide tend to dissolve in acidic solution?
How much heat is absorbed when 45.00 g of C(s) reacts in the pressence of excess SO2(g) to produce CS2(l) and CO(g) according to the following chemical equation?
Find out the empirical formula also determine how many carbon,hydrogen, oxygen atoms are in there in this empirical formula?
Most top-loading balances used in this experiment measure a mass only to the nearest mg(+/- 0.001 g). This significantly affects the calculation of R in the experiment
In combustion studies of H2 as an alternative fuel, you find evidence that the hydroxyl radical (HO) is formed in flames by the following reaction
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