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Rufina [12.5K]
3 years ago
11

A solution was prepared by mixing 50.0 g

Chemistry
1 answer:
frez [133]3 years ago
4 0

Answer:

4.78 %.

Explanation:

<em>mass percent is the ratio of the mass of the solute to the mass of the solution multiplied by 100.</em>

<em></em>

<em>mass % = (mass of solute/mass of solution) x 100.</em>

<em></em>

mass of MgSO₄ = 50.0 g,

mass of water = d.V = (0.997 g/mL)(1000.0 mL) = 997.0 g.

mass of the solution = mass of water + mass of MgSO₄ = 997.0 g + 50.0 g = 1047.0 g.

<em>∴ mass % = (mass of solute/mass of solution) x 100</em> = (50.0 g/1047.0 g) x 100 = <em>4.776 % ≅ 4.78 %.</em>

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Answer:

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A chemical bond is formed between magnesium and chlorine. Describe the process and identify the nature of the chemical bond.
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The answer to your question is: b

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c. Magnesium does not react chemically with chlorine because magnesium gives up electrons, but chlorine only shares electrons.  This answer is wrong, Mg and Cl react and produce MgCl₂.

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What is the percent yield if 107.50 g NH3 reacts with excess O2 according to the
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First we <u>convert 107.50 g of NH₃ into moles</u>, using its <em>molar mass</em>:

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Now we <u>calculate how many moles of NO would have been formed by the complete reaction of 6.32 moles of NH₃</u>:

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Then we <u>convert 6.32 moles of NO to grams</u>, using its <em>molar mass</em>:

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Finally we <u>calculate the percent yield</u>:

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