What is the definition of Chemical Bond according to the presentation?

A chemical bound is a lasting attraction between atoms, iron or molecules that enables the formation of chemical compounds. The bound may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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2b2t

explanation:

2b2t