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3 years ago

If the mass of a material is 78 grams and the volume of the material is 23 cm3, what would the density of the material be?

Chemistry

2 answers:

Paraphin [41]3 years ago

8 0

Density = mass / volume

Density = (78g) / (23cm^3)

Density = 3.4g/cm^3

Orlov [11]3 years ago

6 0

By definition, density is mass per volume.

$d=\frac{m}{v}$

Plugging in the given values gives:

$d=\frac{78 g}{23 cm^3} =3.3913\frac{g}{cm^3}$

The only operation done in the problem is division, and both numbers have 2 significant figures, so this would be $3.4\frac{g}{cm^3}$ with correct significant figures.

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Answer:

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Explanation:

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Evaluating the above integral from x₁ = 0 to x₂ = L/8 and solving it, we have:

$P = \frac{2}{L} [\frac{L}{16} (1 - 4\frac{sin(\frac{n \pi}{4})}{n \pi})]$

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Solving for n=4:

$P = \frac{1}{8} (1 - 4\frac{sin(\frac{4 \pi}{4})}{4 \pi})$

$P = \frac{1}{8} (1 - \frac{sin (\pi)}{\pi})$

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I hope it helps you!

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Answer:

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