Chemistry: A compound decomposes by a first-order process. If 36 %% of the compound decomposes in 60 minutes, the half-life of the compound is minutes. A compound decomposes by a first-order process. If 36 of the compound decomposes in 60 minutes, the half-life of the compound is minutes. -5 93 41 -18 39

A compound decomposes by a first-order process. If

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feyundre52

22.04.2022

Chemistry

The half-life of the compound is 93 minutes

Explanation:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant =100

a - x = amount left after decay process = (100-36) = 64

a) for completion of 36 % of reaction

$60=\frac{2.303}{k}\log\frac{100}{100-36}$

$k=\frac{2.303}{60}\log\frac{100}{64}$

$k=0.0074min^{-1}$

b) for completion of half life:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

$t_{\frac{1}{2}}=\frac{0.693}{k}$

$t_{\frac{1}{2}}=\frac{0.693}{0.0074min^{-1}}=93min$

The half-life of the compound is 93 minutes

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Ответ:

maddie3354

18.06.2020

Chemistry

Oxygen present in food items makes then rancid due to the presence of oils and fats. If the food is flushed with nitrogen, it prevents it from being oxidised (the nitrogen acts as an antioxidant).

Hope it helps ! :)

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A compound decomposes by a first-order process. If 36 %% of the compound decomposes in 60 minutes, the half-life of the compound is minutes. A compound decomposes by a first-order process. If 36 of the compound decomposes in 60 minutes, the half-life of the compound is minutes. -5 93 41 -18 39

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