100mL of a 6 M solution

0.6 mol

Explanation:

Moles = Volume x Molarity

Given: Volume = 100 mL = 0.1 L

Molarity = 6 M = 6 mol/L

Moles = 0.1 L x 6 mol/L = 0.6 mol

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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