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Rudiy27
3 years ago
8

This force occurs when there is an attractive and repulsive force between two poles.

Chemistry
1 answer:
mihalych1998 [28]3 years ago
5 0

Answer:

Magnetic force

Explanation:

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What is the half-life of a compound if 42% of a given sample of the compound decomposes in 60 minutes
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The half-life of a compound is 76 years for 42% of a given sample of the compound decomposes in 60 minutes.

<h3>What is the expression for rate law for first order kinetics?</h3>

The rate law for first order kinetics is

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

Where

k - rate constant

t - time passed by the sample

a - initial amount of the reactant

a-x - amount left after the decay process

<h3>What is expression for half-life of the compound?</h3>

The expression for the half-life of the compound is

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

Where k is the rate constant

<h3>Calculation for the given compound:</h3>

It is given that

t = 60 minutes

a = 100 g

a-x = 100 g - 42 g = 58 g

(Since it is given that 42% of the given compound decomposes)

Then,

k = \frac{2.303}{60}log\frac{100}{58}

  = 9.08 × 10^{-3} years^{-1}

Then, the half-life of the compound is

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

    = \frac{0.693}{9.08*10^{-3} }

    = 76.3 years ≅ 76 years

Therefore, the half-life of the given compound is 76 years.

Learn more about rate law for first order kinetics here:

brainly.com/question/24080964

#SPJ4

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