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Consider the following mechanism for the oxidation of bromide ions by hydrogen peroxide in aqueous acid solution. H+ + H2O2 ? H3O2+ (rapid equilibrium) H3O2+ + Br- ? HOBr + H2O (slow) HOBr+H+ +Br- ?Br2 +H2O(fast) Which rate law is consistent with this mechanism? k[Br-][H+]-1[H2O2]-1 k[H+][H2O2][Br-] k[H+][H2O2] k[HOBr][H+][Br-]
The dimensions of a rectangular solid are 8.45 cm long, 4.33 cm wide and 2.85 cm high. If the density of the solid is 9.43 g/cm3, then determine the mass?
An empty aerosol can at 25 degree celcius still contains gas at 1.00 atmosphere pressure. If an empty can is thrown into a 488.2 degree celcius fire, what is is the final pressur in the heated can.
energy to heat a certain sample of pure silver from 12.0 C to 18.2 C. Calculate the mass of the sample of silver.
Consider the following reactions and select the false statement below. CO2(g) + OH?(aq) ? HCO3?(aq) Cr3+(aq) + 6H2O(l) ? Cr(H2O)63+(aq) A. in Cr(H2O)63+ the Cr3+ is attracted to the H2O molecules via ion-dipole intermolecular forces
what concentration of NH4+ must be present in a 0.20M aqueous ammonia solution to prevent the percipitation of Mg(OH)2 if the ammonia solution
Which anions generally do not form precipitates? What are the exceptions?
The volume of the gas collected =500 ml then determine the mass of O 2 is collected? The vapor pressure of H 2 O at 25 degree Celsius =23.8 torr
In a reaction 8200 g of sodium reacts with 74.00 g of ferric oxide to form sodium oxide and iron metal. Calculate the mass of sodium iron produced.
Calculate the pressure (in atm) exerted by 1.00 mole of acetylene at 125°C in a 20.0-liter container. The van der Waals constants for acetylene are: a = 20.0 L2 • atm/mol2, b = 0.100 L/mol.
a researcher requires 20l if a buffer solution with pH=4.25. How many moles of formic acid, and sodium fomate, could be dissolved in the solution to make this buffer, if none of the equillibrium concentrations should be under 0.100M?
A substance has a molar mass of 60 g/mol with 40.0 percent carbon, 6.7 percent hydrogen, and 53.3 percent oxygen. What is its empirical formula?
Crystalline solids are well-ordered arrays of atoms or molecules. Crystalline solids may be metallic solids, molecular solids, or ionic solids.
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