Question

8. The relative density of a substance expresses the heaviness (or density) of the substance in comparison to water. For example, the relative density of iron is 7.8. Now, by saying that the relative density of iron is 7.8 we mean that iron is 7.8 times as heavy as an equal volume of water. Thus, the relative density of a substance is a number which tells us how many times the substance is heavier than an equal volume of water. relative density of water is 1. Because it is the ratio of densities.
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Answer 1

Answer:

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