2. In the chemical formula for water, H2O, what does the number 2 indicate?

The 2 is the subscript of H, which represents the presence of 2 Hydrogen atoms.

Explanation:

There is hydrogen bonding in water. Hydrogen bonding is strong electrostatic forces of attraction between positively charged protonic H+ cation directly bonded to lone pair of electrons on highly electronegative N, O or F atom. In this case, hydrogen is bonded to oxygen.

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b) the importance and limits of political power.

b is the answer i am assuming