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Ulleksa [173]
2 years ago
7

What is an isotope? list the isotopes of hydrogen in order from lighter to heavier. which is the most common among them?

Chemistry
1 answer:
malfutka [58]2 years ago
6 0
Isotopes= a group of atoms with the same no. of protons , but different no. of neutrons

Hydrogen isotopes

^1H\implies ^2H\implies ^3H

The name of the second isotope is deuterium and the name of the third isotope is tritium(radioactive).The most abundant isotope is ^1H
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Fulgurites are the products of the melting that occurs when lightning strikes the earth. Microscopic examination of a sand fulgu
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Answer:

Fe₃Si₇

Explanation:

In order to determine the empirical formula, we have to follow a series of steps.

Step 1: Determine the percent composition

Fe: 46.01%

Si: 53.99%

Step 2: Divide each percentage by the atomic mass of the element

Fe: 46.01/55.85 = 0.8238

Si: 53.99/28.09 = 1.922

Step 3: Divide all the numbers by the smallest one

Fe: 0.8238/0.8238 = 1

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Step 4: Multiply by numbers that make the coefficients whole.

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The empirical formula is Fe₃Si₇.

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Three common gaseous compounds of nitrogen and oxygen of different elementary composition are known: (A) laughing gas containing
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Answer:

Please find how these data prove the law of multiple proportions below

Explanation:

The law of multiple proportions was proposed by an English chemist called John Dalton. The law states that when two elements combine and to form more than one compound. The weights/masses of the second element in the two compounds, which combines with a fixed ratio of the first element, is in a simple whole number ratio.

In this question, Nitrogen is said to combine with oxygen to give three different compounds as follows:

A) laughing gas containing 63.65% nitrogen i.e. 0.6365g

This means that the mass of oxygen will be (1-0.6365) = 0.3635g

B) colorless gas containing 46.68% nitrogen i.e. 0.4668g

This means that the mass of oxygen will be 0.5332g

C) brown toxic gas containing 30.45% nitrogen i.e. 0.3045g

This means that the mass of oxygen will be 0.6955g

The ratios of oxygen in the three compounds is therefore:

0.3635: 0.5332: 0.6955

Divide this ratio by the smallest number (0.3635)

0.3635/0.3635 = 1

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Multiply this ratio by 2, we have:

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Hence, the simple whole number ratio is 2:3:4.

This proves the law of multiple proportions that oxygen is in simple whole number ratio in the three different compounds.

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