3 years ago

The sum of the protons and neutrons in an atom equals the?

Chemistry

1 answer:

Shalnov [3]3 years ago

3 0

Answer:

mass number

Explanation:

The sum of the protons and neutrons in an atom equals the mass number of such an atom.

Mass number is the mass of an atom.
The mass of an atom is concentrated in the nucleus
The particles in the nucleus are the protons and neutrons.

So;

Mass number = number of protons + number of neutrons.

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Δ $H_{reaction}^{0}=[H_{f}^{0}(Al_{2}O_{3}(s)) + (3*H_{f}^{0}(H_{2}SO_{4}(aq))] - [H_{f}^{0}(Al_{2}SO_{4}(aq)) + (3*H_{f}^{0}(H_{2}O(l))]$

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