Using electronegativity values and types of elements, identify the type of chemical bonding present in each substance below and metallic,ionic, or covalent

Using electronegativity values and types of elements, identify the type of chemical bonding present

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Ответ:

rclara34oxbrr9

30.01.2022

Chemistry

10.88 %

Explanation:

Given that:

Half life = 15.0 hours

$t_{1/2}=\frac {ln\ 2}{k}$

Where, k is rate constant

So,

$k=\frac {ln\ 2}{t_{1/2}}$

$k=\frac {ln\ 2}{15.0}\ hour^{-1}$

The rate constant, k = 0.04621 hour⁻¹

Time = 48.0 hours

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

So,

$\frac {[A_t]}{[A_0]}=e^{-0.04621\times 48}$

$\frac {[A_t]}{[A_0]}=0.10881$

In percentage, the sample of sodium-24 remains = 10.88 %

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