Chemistry, 09.02.2021 14:00, meandmycousinmagic
Hi, help with these two questions.
1. Write the isotope notation for an atom with 9 protons and an atomic mass of 20.
2. Write the isotope notation for an atom with 13 protons and 12 neutrons.
Answers: 3
Chemistry, 22.06.2019 04:20, lex68259100
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Chemistry, 22.06.2019 18:30, TaraC
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Answers: 1
Chemistry, 22.06.2019 21:30, starl0rd211
Describe at least two advantages and two disadvantages of using hydropower as a source of energy.
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Hi, help with these two questions.
1. Write the isotope notation for an atom with 9 protons and an...
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