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ElenaW [278]
3 years ago
9

Explain why different colors are emitted when different metals are hearted?? Please someone answer this

Chemistry
1 answer:
KengaRu [80]3 years ago
3 0

Answer:

Different elements emit different colors when heated because their electrons have different allowed energy levels according to the element.

Explanation:

When you heat up an atom it's electrons are stimulated and sort of leap to a higher level of energy, and when they calm down, they emit a new energy that shows in the form of light. However, the color wholly depends on the difference in energy between the two levels of energy, every element has a different number in electrons, so therefore there is more range in energy levels, giving each individual element its own specific range of colors. Though it's normally a subtle difference, every elements color range is as unique as a snowflake or a person's fingerprints.

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How much MgO is made when 12Kg of Mg is completely burned in air?
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Answer:

Mass = 20,000 g  

Explanation:

Given data:

Mass of MgO formed = ?

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Solution:

Chemical equation:

2Mg + O₂     →   2MgO

Number of moles of Mg:

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Now we will compare the moles of Mg and MgO.

             Mg          :           MgO

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Mass of MgO:

Mass = number of moles × molar mass

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Mass = 20,000 g  

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Answer:

True.

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