austinwst3
24.12.2019 •
Chemistry
Natom contains one proton, one electron, and one neutron. which two particles are most similar in mass?
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Ответ:
The proton and neutron are so similar in mass that both of their relative masses = 1.
Ответ:
490*x + 700*y > 4000
It is < as it can be equal to 4000 per week or less than.