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3 years ago

A 38.6 kg marble slab is shown above. What is its density? Give your answer to the nearest tenth.

Chemistry

2 answers:

masya89 [10]3 years ago

7 0

Answer: 24.7

Explanation:

LuckyWell [14K]3 years ago

6 0

Answer:

Density, $d=26.7\ g/cm^3$

Explanation:

The attached figure shows a 38.6 kg marble slab. The dimensions of the marble slab is 23 cm × 17 cm × 4 cm

Density = mass/volume

Volume of a cuboid shape is equal to, V = 23 cm × 17 cm × 4 cm

V = 1564 cm³

Density,

$d=\dfrac{38.6\times 10^3\ g}{1564\ cm^3}\\\\d=24.68\ g/cm^3$

$d=26.7\ g/cm^3$

So, the density of the marble slab is $26.7\ g/cm^3$ .

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A solution is made by mixing equal masses of methanol, CH 4 O , and ethanol, C 2 H 6 O . Determine the mole fraction of each com

Fynjy0 [20]

Answer:

Mole fraction of $CH_4O$ = 0.58

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Explanation:

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$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

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Thus,

$Moles= \frac{x\ g}{46.07\ g/mol}$

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$Mole\ fraction\ of\ CH_4O=\frac {n_{CH_4O}}{n_{CH_4O}+n_{C_2H_6O}}$

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3 years ago

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2 years ago

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scoundrel [369]

Answer:

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