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The activation energy of an uncatalyzed reaction is 89 kJ/mol. The addition of a catalyst lowers the activation energy to 57 kJ/mol.
1. Assuming that the collision factor remains the same, by what factor will the catalyst increase the rate of the reaction at 26 degrees C?
2. Assuming that the collision factor remains the same, by what factor will the catalyst increase the rate of the reaction at 138 degrees C?
Which of the following is an experimental fact that valence bond theory cannot explain, but molecular orbital theory can? the paramagnetism observed for O2 the N-N bond order in N2 the rotational barrier about the C-C bond in ethylene the existenc..
A student mixed 5.00 mL of a nickel(2) chloride solution with 5.00 mL of .100M sodium phosphate and a precipitate formed. How many moles of sodium phospahte were present in 5.00 mL of the solution?
Aqueous solutions of 30% (by weight) hydrogen peroxide, H2O2, are used to oxidize metals or organic molecules in chemicals reactions. Given that the density of the solution is 1.11 g/mL, calculate the molality, molarity, and mole fraction.
The solubility of barium fluoride, BaF2, is 3.15 x 10-3 M at 25 °C. Calculate the solubility product, Ksp, of both compounds.
How many mL of 0.358M NaOH are required to completely react with 16.9 mL of 0.577M copper(II) nitrate. (balanced equation)
How many seconds are required to produce 1.0 g of silver metal by the electrolysis of a AgNO3 solution using a current of 30 amps?
Define buffer capacity and explain why the buffer capacity reaches a maximum when pH=pKa
Fluorine reacts with oxygen to yield oxygen difluoride. 2 F2(g) + O2(g) 2 OF2(g) What is the value of K if the following concentrations are found at equilibrium: [O2] = 0.200 mol/L, [F2] = 0.0100 mol/L, and [OF2] = 0.0633 mol/L.
The combustion of carbon with excess oxygen forming carbon dioxide is exothermic. C(s) + O2(g) => CO2(g) ?Hrxn = -393 kJ If 8,622kJ of heat is needed from the combustion, how much carbon (g) must be consumed
Estimate the magnitude of the absoulte error and percent error in the measured sample volumes. Compare those errors to the errors that occur when measuring volumes of approximately 8mL
A 10.4-g sample of CaCl2 is dissolved in 107 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C ..
The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes with the propane (C3H8) to burn it completely.
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