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When 34.2 mL of a 1.02 M NaOH solution is added from a burette to 25.00 mL of a phosphoric acid solution that contains phenolphthalein which caused the solution to change from colorless to red at a certain pH, what is the molarity of the phosphoric acid?
What volume of pure oxygen gas measured at 740 torr and 27 degree C will be obtained when 15.0 g of potassium chlorate are decomposed
For some enzyme reactions (for example, the hydrolysis of cAMP by phosphodiesterase in vertebrate retinal cones)the enzyme is present in large quantities,so that e0/s0 is not a small number.Fortunately,there is an alternate derivation of the Micha..
The most important commercial process for generating hydrogen gas is the water-gas shift reaction: CH4(g) + H2O(g) ? CO(g) + 3H2(g) Use tabulated thermodynamic data to find ?G° for this reaction at the standard temperature of 25°C.
A weak acid (HA) has a pKa of 4.904. If a solution of this acid has a pH of 4.356, what percentage of the acid is NOT ionized
A solution is prepared by dissolving 11.5 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.00 mL sample of this stock solution is added to 52.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
What amount of energy would be released upon formation of a mole of 28Si nuclei from their subatomic particles?
the half-life of tritium 31h is 12.3 years. if 55.0 mg of tritium is released from a nuclear power plant during the
What is the concentration of a solution made from 15ml of 2.0M HBrO, 20.0ml of H20, and 9.7g HBrO (mm=97g/mol)
what is the pH of the solution after the addition of 3.0 ml of HCl? e) What is the pH of the solution at the equivalence point? f) what is the pH of the solution when 5.0ml more of the HCl solution is added after the equivalence point has ben reac..
The equilibrium constant KC for the reaction 2H2(g) + CO(g) ? CH3OH(g) is 135 at a certain temperature. If there are 5.23 ? 10?2 moles of H2 and 3.73 ? 10?
Mg + 2HCl --> MgCl2 + H2 For a mass of 0.013 g Mg and 5.0 mL of 1.00 M HCl, in a flask with V = 140.612 mL at 23.5?C. Calculate the initial and final pressure (atm).
a balloon is filled to a volume of 7.0 102 ml at a temperature of 39.0degc. the balloon is then cooled at constant
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