Chemistry

Chemistry, 02.07.2019 06:30, angelasan16

17. catalyst is (a) a molecule or atom which increases the rate of reaction (b) a molecule or atom which decreases the rate of reaction (c) a molecule or atom which alters the rate of reaction but does not take part in the chemical reaction (d) both a and b

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Chemistry, 22.06.2019 17:00, calmicaela12s

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

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Chemistry, 23.06.2019 16:00, naiomireyes74p2aybs

Be sure to answer all parts. the catalytic destruction of ozone occurs via a two-step mechanism, where x can be any of several species: (1) x + o3 â†’ xo + o2 [slow] (2) xo + o â†’ x + o2 [fast] (a) write the overall reaction. o3 + o â†’ 2 o2 o3 + xo â†’ x + 2 o2 xo + x + o3 + o â†’ xo + x + 2 o2 x + o3 â†’ xo + o2 (b) write the rate law for each step (using k for the rate constant). reaction 1: reaction 2: k[x][o2] k[xo][o2] k[x][o3] k[xo][o3] k[xo][o2] k[x][o] k[x][o2] k[xo][o] (c) x acts as a and xo acts as a catalyst intermediate intermediate catalyst (d) high-flying aircraft release no into the stratosphere, which catalyzes this process. when o3 and no concentrations are 3 ă— 1012 molecule/cm3 and 9.9 ă— 109 molecule/cm3, respectively, what is the rate of o3 depletion? the rate constant k for the rate-determining step is 6 ă— 10â’15 (cm3)2/moleculeâ·s. give your answer in scientific notation. use one significant figure in your answer. ă— 10 molecule/s

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Chemistry, 01.07.2019 08:30, realneggalloyd

Select the correct answer. which statement is true about a catalyst? a. a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

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Chemistry, 24.08.2019 08:30, mariasoledad1

Which statement most accurately describes the behavior of a catalyst? (a) a catalyst increases the ∆g of a reaction and hence the forward rate. (b) a catalyst reduces the ∆h of a reaction and hence the temperature needed to produce products. (c) a catalyst reduces the activation energy for a reaction and increases the rate of a reaction. (d) a catalyst increases the equilibrium constant and final product concentrations

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