Nancy C.

asked • 10/10/17

Finding density

A block of lead has dimensions of 4.5 cm by 5.2 cm by 6.0 cm. The block has a mass of 1587 g. Calculate the density of lead.

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Arturo O. answered • 10/10/17

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m = 1587 g
 
V = (4.5 x 5.2 x 6.0) cm3
 
ρ = m/V
 
Can you finish from here?
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Nancy C.

P=1587g/140.4 p = 11.3034 g/cm3
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10/10/17

Arturo O.

Correct!
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10/10/17

Nancy C.

Thank you. I originally added the dimensions. Can you explain why you multiply them?
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10/11/17

Arturo O.

You need the volume to find the density.  Volume is the product of length x width x height, so you have to multiply the 3 dimensions to get volume.  Then divide the mass by the volume to get density.
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10/11/17

Nancy C.

Oh OK. Thanks for the help. Have a great day.
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10/11/17

Arturo O.

You are welcome, Nancy.
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10/11/17

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