A compound decomposes by a first-order process. If 17.0% of the compound decompo

Question

A compound decomposes by a first-order process. If 17.0% of the compound decomposes in 60.0 minutes, the half-life the compound is 223 minutes 325 minutes 198 minutes 181 minutes 141 minutes A catalyst can increase the rate of a reaction by providing an alternative pathway with a lower activation energy by increasing the overall activation energy (E_a) of the reaction by lowering the activation energy of the reverse reaction by changing the value of the frequency factor (A) All of these are ways that a catalyst might act to increase the rate of reaction When Pb-210 decays by release of a beta particle, what isotope is formed?^210Bi^209Bi 209Pb 210TI 209TI In the nuclear transmutation, ^16_8 O (p. alpha) 13/7 N, what is the bombarding particle? an alpha particle a beta particle a gamma photon a proton a phosphorus nucleus The combination of two light nuclei to form a heavier nuclei is called radioactive cleavage half life nuclear fusion nuclear fission radioactive merge

Explanation / Answer

Q15

1st order

Afinal = 1-0.17 = 0.83

Ainitial = 1.0

t = 60 min

so..

let us apply:

Af = Ainitial * (1/2)^(t/HL)

0.83 = 1 * (1/2) ^(60/HL)

ln(0.83) / ln(0.5) = 60/HL

HL = 60 / (ln(0.83) / ln(0.5)) = 223.20 mins

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