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snow_tiger [21]
3 years ago
9

How was the modern understanding of the atom developed?

Chemistry
1 answer:
Zepler [3.9K]3 years ago
8 0

Answer:

The modern understanding of an atom was developed by the quantum theory

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the correct answer is B
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Which of the following is a measure of the average kinetic energy of the particles in a substance?
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Balance the following chemical equation (with all steps)
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Answer:

Balanced chemical equation:

2Al + 3H₂SO₄  →  Al₂(SO₄)₃ + 3H₂

Explanation:

Chemical equation:

Al + H₂SO₄  →  Al₂(SO₄)₃ + H₂

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Steps:

Let balance the SO₄ first.

Al + 3H₂SO₄  →  Al₂(SO₄)₃ + H₂

There are three H₂ on left so put the coefficient three on right too.

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Two Al  on right and one on left so we will put the coefficient two on left.

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All atoms are correctly balanced.

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