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A certain reaction has an enthalpy of delta H= -24KJ as well as an activation energy of Ea =73kj. Explain what is the activation energy of the reverse reaction?
Will a precipitate form on mixing 25ml of 1.0x10-3 M MnSO4, 25ml of 1.0x10-3 M FeSO4, and 200ml of a buffer solution that is 0.20 M in NH4Cl and 0.20 M in NH3
Given that the density of solid sodium is 0.968 g/cm^3, estimate the atomic (metallic) radius of a Na atom. Assess the value obtained, indicating why the result is only an estimate and whether the actual radius should be larger or smaller than the..
What is the molar solubility of Mns, in grams per liter, in a buffer solution that is 0.110 M HC2H3O2 -0.505 M NaC2H3O2? For Mns
A photoelectron spectroscopy experiment is conducted in which light with a wavelength of 58.4 nm is directed at a sample of rubidium, resulting in the ejection of the electron
a student observed after an experimentnbsp that a gas sample of 250-mlnbsp has a mass of 0.243 g atnbsp a temperature
50.0 mL of 1.0 M HCl at 25.0 oC were mixed with 50.0 mL of 1.0 M NaOH also at 25.0 oC in a styrofoam cup calorimeter. After the mixing process, the thermometer reading was at 31.9 oC.
Write a balanced net ionic equation for the neutralization of equal molar amounts of nitric acid and methyl amine (CH3NH2). Indicate whether the pH after neutralization is greater than, equal to, or less than 7.
A 25.0 ml solution of .0600 M EDTA was added to a 57.0 ml sample containing an unknown concentration of V3+. All V3+ present formed a complex, leaving excess EDTA in solution.
How many grams of water can be cooled from 36 degrees celsius to 23 degrees celsius by the evaporation of 53g of water.
A system receives 93 J of electrical work, performs 227 J of pressure-volume work and releases 155J of heat.What is the change in Internal energy of the system?
How many minutes would a solution of Cd2+ have to be electrolyzed with a 2.420 A current to plate out 1.77 g of Cd? min
Consider the titration of 100.0 mL of 0.100 M NaOH with 1.00 M HBr. Find the pH at the following volumes of acid added and make a graph of pH versus Va: Va = 0, 1,5,9, 9.9, 10. 10.1. and 12 mL.
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