The UNIT Was Originally Published in the

question 20

Multiple Choice

The UNIT was originally published in the

• A) 1910s.
• B) 1940s.
• C) 1960s.
• D) 1990s.

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Definitions:

Alkalinity

A measure of the capacity of water or any solution to neutralize acids, often associated with a pH level above 7, indicating a basic solution.

Molecular Formula

A notation that shows the number and type of atoms in a molecule, indicating the composition but not the structure of the molecule.

Hydrogen Atom

The simplest type of atom, consisting of one proton in the nucleus and one electron in orbit around it.

Oxygen Atom

A highly reactive element that is a key component of water and essential for cellular respiration in living organisms.