Question

Define the term relative density of a substance.name the device used to measure it.

Answer 1

Answer:

The ratio of the density of a substance to the density of a standard substance under specified conditions. For liquids and solids the standard is usually water at 4°C or some other specified temperature. For gases the standard is often air or hydrogen at the same temperature and pressure as the substance

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Answer 2

Answer:

Hydrometer (for liquid substances)

Explanation:

A hydrometer is an instrument of uniform mass which is used to measure the relative density of unknown liquids

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