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Problem- The standard free energy of activation of one reaction A is 94.80 kJ mol-1. The standard free energy of activation of another reaction B is 78.50 kJ mol-1. Assume a temperature of 298 K and 1M concentration. By what factor is one reaction faster than the other?
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Classify each of the following as an element, compound, homogeneous mixture, or heterogeneous mixture.
Question- What is the difference between the hydrogen-oxygen fuel cell and the proton exchange membrane fuel cell
Iron has a body-centered cubic unit cell, and a density of 7.87 g/cm3. Calculate the edge length of the unit cell, in pm.
Compression and Cooling of Nitrogen Gas. A volume of 65.0 ft^3 of N2 gas at 90°F and 29.0 psig is compressed to 75 psig and cooled to 65°F.
An aqueous solution containing 2.0M of AgNO3 is slowly added from a burette to an aqueous solution that holds 0.01M Cl- as well as .01M Br-. Is separation of the two ions by selective precipitation feasible? Assume 10^-5 M as the complete removal ..
The solubility of KNO3 is 38 g/100 g H2O at 20 degrees Celsius and 1.50 times 100 g/100 g H2O at 70 degrees Celsius. A solution is prepared by mixing 45 g of KNO3 in 35 g H2O at 70 degrees Celsius. Will all of the potassium nitrate dissolve at 70 ..
In an experiment, 0.500 L of 0.020 mol L ^-1 NaOH(aq) is rapidly mixed with an equal volume of 0.020 mol L^-1 HCN(aq). Calculate the time, in seconds, required for this [OH] to decrease to 1.0×10^4 mol L^1.
Problem- Calculate the concentrations of all species in a 0.620 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
What is the absolute pressure when the mass of the substance on a dead weight gauge is 20 kg, and the inner diameter of the cylinder is 2 cm? Assuming the g=9.82 m/s2 and the atmosphere pressure is 745 torr
Calculate the millimoles of sodium hypochlorite used in the reaction: 2.3mL of a 5.25% solution (Clorox). Compare this value with the quantity (150mg) of cyclohexanol (MM = 100.158 g/mol) to be used in the reaction
Calculate H rxn for this reaction and compute how much heat is produced from a hand warmer containing 15.0 grams of iron powder.
Alkynes can be hydrated in the presence of acid and HgSO4, by electrophilic addition of a molecule of water to the triple bond.
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