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What is the ratio of mass to a volume of substance?

A:

Quick Answer

The ratio of mass to volume of a substance is called density. Units of measure for density include kilograms per meter cubed and grams per centimeter cubed.

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Full Answer

Density of a substance is a useful property as it determines whether the substance can float on water. If the density of a substance is less than the density of water, it floats on water; else, it sinks. The density of water is 1 gram per centimeter cubed. It is used as a standard in calculating relative densities of various substances. Relative density is defined as the ratio of the density of a substance to the density of water.

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Related Questions

  • Q:

    What is the relationship between mass and density?

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    Density and mass are mutually dependent physical properties, with density being equal to the amount of mass per unit of volume of any particular object or substance. The mass of any object depends entirely on its overall density, with denser objects having greater mass, for the same volume, than less-dense objects. The mass of an object with uniform composition changes if pieces are added or removed, but its density remains constant. Meanwhile, barring any melting or evaporation, the density of an object tends to change with changes in temperature, while the mass remains the same.

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  • Q:

    How many liters are in one ton?

    A:

    Litres are a measurement of volume, while tons are a unit of weight, so the answer varies depending on the density of the substance being measured. The denser the substance, the less of it is needed to reach a ton.

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  • Q:

    How many milliliters are in one milligram?

    A:

    Since milliliters measure volume and milligrams measure mass, it is necessary to know the density of the substance to convert between the two. The formula mass equals volume times density calculates the conversion.

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  • Q:

    How do you find mass?

    A:

    Mass is equal to density times volume, or m = Dv, since density is equal to mass divided by volume, or D = m/v. Mass is denoted by the symbol "m," and its SI units are kilograms.

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