4 years ago

How can we tell that humans are affecting climate change

Chemistry

1 answer:

Kipish [7]4 years ago

4 0

We pollute and destruct land. We also have stuff that affects the climate in a good way <span />

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3 years ago

How many half-lives are required for the concentration of reactant to decrease to 1.56% of its original value?4247.56.56

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Answer:

6 half-lives are required for the concentration of reactant to decrease to 1.56% of its original value.

Explanation:

Using integrated rate law for first order kinetics as:

$[A_t]=[A_0]e^{-kt}$

Where,

$[A_t]$ is the concentration at time t

$[A_0]$ is the initial concentration

Given:

Concentration is decreased to 1.56 % which means that 0.0156 of $[A_0]$ is decomposed. So,

$\frac {[A_t]}{[A_0]}$ = 0.0156

Thus,

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<u>6 half-lives are required for the concentration of reactant to decrease to 1.56% of its original value.</u>

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