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EleoNora [17]
3 years ago
15

Which branch of chemistry is most likely to involve the study of the earths crust

Chemistry
1 answer:
stepan [7]3 years ago
5 0
I'm pretty sure it's organic chemistry.
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The atomic mass is the average number of protons and neutrons for all natural isotopes of an element. It is a decimal number.

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Hydrogen has three natural isotopes: 1H, 2H, and 3H. Each isotope has a different mass number.

1H has 1 proton. Its mass number is 1. 2H has 1 proton and 1 neutron. Its mass number is 2. 3H has 1 proton and 2 neutrons. Its mass number is 3. 99.98% of all hydrogen is 1H 0.018% of all hydrogen is 2H 0.002% of all hydrogen is 3H Together, they give a value of atomic mass of hydrogen equal to 1.0079 g/mol.

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