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lf the catalyzed decomposition of NrO occurs first at a Tr:341 K and then atTr = 229 K, with a k/k, ratio of 0.500, what is the activation energy?
if Ea is in kj/mol, would I have to change gas const R 8.314 J/mol*k into kj?
a cell depositing Cu from a Cu2+ bath operates for 10 hours with an average current of 5.8 A. if 65.3 g of copper is deposited, at what efficiency is the cell operating?
Rates of reactions: Rate = k [A]^m [B]^n where the reaction time = 1 / Rate. Two chemical experiments were performed to determine the exponent "n". (We will assume that "m" is known).
A gas occupying 28 mL at standard conditions is heated to 13?C while the pressure is reduced to 0.84119 atm. What is the new volume occupied by the gas.
Differences in boiling points, Rationalize the difference in boiling point between the members of the following pairs of substances:
The following reaction is endothermic in the forward direction. NH4Cl(s) NH3(g) + HCl(g) For each of the following cases, briefly explain whether the action causes net reaction from left to right, right to left, or no net reaction.
What is the value of the equilibrium constant for the reaction between I2 (s) and Br- (aq) at 25 degrees celcius?
Tell what type of chemical reaction is represented by the following chemical equation.
A certain quantity of a gas occupies 61.3 mL at 68 ?C. If the pressure remains constant, what would be the volume of the gas at 128 ?C?
Methyl orange is made by diazotizing the sodium salt of sulfanilic acid (p-aminobenzenesulfonic acid) followed by coupling with N,N-dimethyl aniline. Write equations for these reactions,giving the structure of methyl orange.
nitric acid is usually purchased in concentrated form with a 70.3% HNO3 concentration by mass and a density of 1.14% g/ml. How much of the concentrated stock solution in milliliters should you use to make 2.5L of 0.500 M HNO3.
The osmotic pressure of poly(methyl methacrylate) in tolune has been measured at a series of concentrations at 298 K. Determine graphically the molar mass of the polymer
The normal respiratory rate for a human being is 15.0 breaths per minute. The average volume of air for each breath is 505 cm3 at 20 ? C and 9.95 × 10 4 Pa.
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