A sheet of metal is 5 mm wide, 13 cm tall, and 2.7 cm long. it was 58 grams. what is the density
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A sheet of metal is 5 mm wide, 13 cm tall, and 2.7 cm long. it was 58 grams. what is the density

[From: ] [author: ] [Date: 12-09-13] [Hit: ]
5mm = 0.Now multiply the three to get cm^3,0.5 cm x 13 cm x 2.7 cm = 17.Since density = mass/ volume,......
I know the density formula is D=M/V but I don't know how to set up the equation. My chemistry teacher does not know how to teach what so ever, it maybe because she also has this strong Hispanic accent. PLEASE HELP!

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The mass is given (58 grams) but not the volume.
Volume would be cm x cm x cm =cm^3, or cc
Convert 5mm to centimeters
5mm = 0.5 cm
Now multiply the three to get cm^3, volume
0.5 cm x 13 cm x 2.7 cm = 17.55 cm^3

Since density = mass/ volume,
D = 58g/ 17.55cm^3 => 3.31 g/ cm^3

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you need to figure out the volume, then use the density formula to find the density.

first convert 5mm to cm:
1cm=10mm
therefore 5mm = 5mm x 1cm/10mm = 0.5cm

Volume= width x height x length
= 0.5cm x 13cm x 2.7cm = 18cm^3 (rounded up)

Density = mass/volume
=58g/18cm^3 = 3.3 g/cm^3

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volume = length x width x height (match units)
width = 5 mm --> 0.5 cm
height = 13 cm
length = 2.7 cm

1 cm^3 = 1 mL
density = 58 g / (0.5 x 13 x 2.7 mL)
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