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nirvana33 [79]
3 years ago
8

If an atom contains 12 protons and 10 neutrons, what's its mass number?

Chemistry
1 answer:
user100 [1]3 years ago
7 0
A = Z + n

A = 12 + 10

A = 22

Answer C

hope this helps!
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Answer:

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I think the correct answer from the choices listed above is option D. When a molecular compound melts, they undergo the process of phase change from solid to liquid therefore m<span>olecules arranged in a regular pattern change to an irregular pattern. Hope this answers the question.</span>
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