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02.09.2020 •
Chemistry
Atomic number and atomic mass
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Ответ:
Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.
Explanation:
hope it help u make me brainlist
Ответ:
4.2=N volume(d/m³)
N=4.2x22.4=94.08d/m³