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HACTEHA [7]
3 years ago
7

How does the energy of an electron change when the electron moves closer to the nucleus

Chemistry
1 answer:
Minchanka [31]3 years ago
8 0
When a electron moves from higher shell to lower shell ,it releases energy because if it goes to lower shell without releasing energy then it will unable to do that so.as lower electron shells have low energy electrons
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Carbohydrates,Monosaccharides,and disaccharides

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[Picture] Fuse the two elements together.
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<h3>What is mass percentage</h3>

The percentage by mass expresses the concentration and indicates the amount of mass of solute present in 100 grams of solution.

In other words, the percentage by mass of a component of the solution is defined as the ratio of the mass of the solute to the mass of the solution, expressed as a percentage.

The percentage by mass is calculated as the mass of the solute divided by the mass of the solution, the result of which is multiplied by 100 to give a percentage. This is:

mass percentage=\frac{mass of solute}{mass of solution}x100

<h3>Mass percentage of CaCO₃</h3>

In this case, you know:

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Replacing in the definition of mass percentage:

mass percentage=\frac{2.62 grams}{3.82 grams}x100

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Finally, the mass percentage of CaCO₃ is 68.59%.

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