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A 20.0 mL aliquot of a sample of a hydrogen peroxide solution was made acidic by adding some sulfuric acid and titrated with a 0.1003 M solution of Ce(SO4)2 .The equivalence point was reached after 41.3 mL of the titrant was added. What was the concentration of the original hydrogen peroxide solution?
if .350g sample of cinnabar is heated the org decomposes completly to leave .302 of pure mercury metal.what is the empirical formula of cinnabar?
Calculate the empirical and molecular formulae of A and B. Deduce the structural formulae of A and B. State the type isoerism exhibited by A and B.
A 2.30 L sample of O2(g) was collected over a liquid at a total pressure of 785 torr and 25°C. When the O2(g) was dried (vapor of that liquid removed), the gas had a volume of 1.86 L at 25°C and 785 torr.
The system CO2(g) + H2(g) *) H2O(g) + CO(g) is at equilibrium at some temperature. At equilibrium a 4.00 L vessel contains 1.00 mole CO2, 1.00 mole H2, 2.40 moles H2O, and 2.40 moles CO.
acetic acid vapour contains a proportion of planar hydrogen-bonded dimers. the relative permittivity of pure liquid
Specified that the specific heat of the solution is 4.184 J/g°C, the density of the solution is 1.00 g/mL, as well as that the heat of neutralization for the process H+(aq) + OH-(aq) > H2O (1) is -56.2 kJ, define what is the final temperature of t..
Compare a solid and a gas with respect to the arrangement of their molecules. Use this comparison to explain the effect of pressure exerted by a solid and by a gas.
The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. But given the same kinetic energies, a lighter molecule will move faster than a heavier molecule.
An average reaction rate is calculated as the change in the concentration of reactants or products over a period of time in the course of the reaction. An instantaneous reaction rate is the rate at a particular moment in the reaction and is usuall..
Decomposition of KClO3 is sometimes used to prepare small amounts of O2 in the laboratory: 2KClO3(s) 2 KCl(s) + 3 O2(g). How many grams of O2 can be prepared from 4.50 g of KClO3?
1. a solution of vinegar has a ph of 2.85. calculate thehydronium ion concentratation and the hydroxide ion
A 4.50 g sample of NaOH at 25°C dissolves in 75.0 mL of water also at 25.0°C. The final equilibrium temperature of the mixture is 40.5°C. What is the enthalpy of solution, ?Hs, of NaOH expressed in kilojoules per mole
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