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alexira [117]
4 years ago
13

Help fast and explain how to solve half life

Chemistry
1 answer:
soldi70 [24.7K]4 years ago
8 0

The half-life of the radioactive sodium-24 sample is 15 hours.

Explanation:

We have the following values concerning the half-life of the sodium-24 sample:

time (hours)             amount of sample (g)

30                                         52

15                                         104

0                                          204

So the half-life of the sample, the time in which half of the sample will decay, is 15 hours.

Learn more about:

half-life

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In one of his experiments, Lavoisier placed 10.0 grams of mercury (II) oxide into a sealed container and heated it. The mercury
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Oxygen gas produced : 0.7 g

<h3>Further explanation</h3>

Given

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Required

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Solution

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If oxygen with an electronegativity of 3.5 were to make a chemical bond with lithium, electronegativity of 1.0, what kind of bon
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In this example, the difference between the electronegativity of oxygen and lithium is 3.5 - 1.0 = 2.5. Since 2.5 > 1.8, the bond between the two elements would likely be ionic.

It is possible to reach the same conclusion based on the fact that lithium is a metal while oxygen is a nonmetal. When metal elements react with non-metal elements, the product is typically an ionic compound- with ionic bonds between the atoms.

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Hello,

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Explanation:

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