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28 December, 03:25

Martina has a sample of an unknown substance. She measures the substance. Its mass is 13.5 grams, and its volume is 5 cm3. Which metal might her sample be made of?

A silver (density = 10.49g/mc3)

B copper (density = 8.96g/mc3)

C iron (density = 7.87g/mc3)

D aluminum (density = 2.7g/mc3)

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  1. 28 December, 03:43
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    The answer is D aluminum (density = 2.7g/mc3).

    A density (D) of a substance is a quotient of its mass (m) and its volume (V):

    D = m/V

    It is given:

    m = 13.5 g

    V = 5 cm³

    Therefore:

    D = m/V = 13.5/5 = 2.7 g/cm³

    Among all choices, only aluminum has density of 2.7 g/cm³.
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