kenldykido2300

28.02.2020 • 

Chemistry

The initial concentration of reactant in a first-order reaction is 0.27 M. The rate constant for the reaction is 0.75 s−1. What is the concentration (mol/L) of reactant after 1.3 s? The initial concentration of reactant in a first-order reaction is 0.27 . The rate constant for the reaction is 0.75 . What is the concentration () of reactant after 1.3 ? 0.72 0.10 2.5 0.029 1.7

Ответ:

samiiegarciia

19.01.2022

Chemistry

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≈ 0.10M

Explanation:

[A]o = 0.27M

Rate constant, k = 0.75 s−1

[A] = ?

time, t = 1.3

Integrated formular for a first order reaction is given as;

ln[A] = ln[A]o − kt

ln[A] = ln(0.27) - 0.75(1.3)

ln[A] = -1.309 - 0.975

ln[A] = -2.284

[A] = 0.1019M ≈ 0.10M

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Ответ:

anyawebb06

12.03.2022

Chemistry

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100,000 is the answer because 140,000 look at the 1 and 4 and below is rounded down 5 and up is rounded to the giver number like 200,000 but since it's 4 the number is rounded to 100,000

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