Most vinegars including apple cider vinegar and white distilled vinegar , are 3-5% acetic acid while cleaning vinegar can range from 6 15% acetic acid. What advantage does this give a cleaning solution?

Explanation:

The higher the percentage of the vinegar solution, the higher the molar concentration of hydrodium ions, [H₃O⁺].

pH is a measure of the concentration of H₃O⁺ ions:

The lower the pH the more acidic the solution.

Thus, the higher the percentage of vinegar, the higher  [H₃O⁺], the lower the pH, and the more acidic the solution.

The feature that makes vinegar a good cleaning agent is its acidity: high acidity environments are inhospitable for many microorganisms.

Thus, the advantage of a vinegar with 6 - 15% acetic acid is its higher acidity (lower pH), which makes it more suitable to kill more microorganisms.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3