Answer:
15
Explanation:
Atomic mass refers to the sum of protons and neutrons in the nucleus of an atom. So protons are 7and neutrons 8. 7+8=15
What do you need help with
Answer: d.
Explanation: they used them to spy on each other
<span>Attacks upon American ships by the Hawaiian Navy in the Pacific.
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The middle age was in the duration from the 5th century to the 15th century.
The age began with the falling of the Western Roman Empire.
Throughout the era of the Western Middle age, church was the most important force in providing unity and stability.
