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AleksAgata [21]
3 years ago
14

A sample of an unknown solid is found to have a volume of 24.3 cm3 and a mass of

Chemistry
1 answer:
Anna71 [15]3 years ago
7 0
<h2>Answer:  8.93 g/cm³</h2>

<h3>Explanation:</h3>

Density = mass ÷ volume

            = 217.0 g ÷ 24.3 cm³

            = 8.93 g/cm³

<h3>∴ the unknown sample of mass 217.0 grams and volume of 24.3 cm³ has a density of 8.93 g/cm³. </h3>

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The mass of magnesium in 6.02 \times 10^{24} atoms is 240 g.

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<u>Explanation:</u>

First, we have to convert the atoms to moles of magnesium.

We know that 6.02 \times 10^{24} atoms are present in 1 mole of magnesium. So,

    \text { 1 atom }=\frac{1}{6.02 \times 10^{24}} \text { moles }

    6.02 \times 10^{24} \text { atoms }=\frac{6.02 \times 10^{24}}{6.02 \times 10^{23}} \text { moles }=10 \text { moles }

Thus,

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Thus, 240 g of Magnesium is present in 6.02 \times 10^{24} atoms.

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3 years ago
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In this example, since the atoms are sharing atoms, the chemical bond between them would be a covalent bond.

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