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KonstantinChe [14]
3 years ago
14

A particular chemical reaction is exergonic. What can you say about the relationship between the reactants and the products in t

his exergonic reaction?
Chemistry
1 answer:
ozzi3 years ago
7 0

Answer:

Products have a lower total Gibbs free energy in comparison with the reagents total Gibbs free energy.

Explanation:

Hello,

Exergonic chemical reactions are those that the overall Gibbs free energy is negative, it means that the products have a lower total Gibbs free energy, turning out into a spontaneous chemical reaction. Such reactions are thermodynamically possible under standard conditions and they usually release heat.

Best regards.

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A sample originally contained 1.28 g of a radioisotope. It now contains 1.12 g of its daughter isotope.
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The answer is 3.

<span>The relation between number of half-lives (n) and decimal amount remaining (x) can be expressed as:

</span>(1/2) ^{n} =x

We need to calculate n, but we need x to do that. To calculate what p<span>ercentage of a radioactive species would be found as daughter material, we must calculate what amount remained:
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If 1.28 is 100%, how much percent is 0.16:
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Now, let's implement this in the equation: 

<span>(1/2) ^{n} =0.125
</span>
Because of the exponent, we will log both sides of the equation:
n * log(1/2) = log(0.125)
n = \frac{log(0.125)}{log(1/2)}
<span>n = \frac{log(0.125)}{log(0.5)}
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Therefore, 3 half-lives have passed <span> since the sample originally formed.</span>
4 0
3 years ago
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