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26 August, 09:46

A piece if copper has a volume of 100.0cm3. If the mass of copper is 890 g, what is the density of copper?

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  1. 26 August, 10:07
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    Density = mass / volume

    therefore ...

    density = 890g / 100.0 cm3

    density = 8.9 g/cm3

    The answer is only 2 significant figures because there are two sig. figs in 890 (the zero is a trailing zero)

    remember to include the units

    all I did was divide the two numbers
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