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Murljashka [212]
3 years ago
6

What is essential to living things because many of the chemical reactions that occur in living things require it?

Chemistry
2 answers:
Gennadij [26K]3 years ago
6 0
<span>Oxygen, carbon dioxide(for respiration and photosynthesis), nitrogen(needed to make proteins which in turn are needed for enzymes and hormones), hydrogen(to be combined with carbon and oxygen to make organic compounds or food for living organisms), and sunlight.</span>
erma4kov [3.2K]3 years ago
5 0
Water because water acts as a solvent to chemical reactions. If we wouldn't have water maybe there wouldn't be any living things.
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Refer to the electron configuration of a potassium atom. The outermost electron in a ground-state potassium atom is in the 4s orbital (fourth s orbital.)

The quantum number n (the principal quantum number) specifies the main energy shell of an electron. This electron is in the fourth main energy shell (as seen in the number four in the orbital.) Hence, n = 4 for this electron.

The quantum number l (the angular momentum quantum number) specifies the shape (s, p, d, etc.) of an electron. l = 1 for s\! orbitals (such as the one that contains this electron.

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