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NeX [460]
3 years ago
9

Explain how you would separate a mixture of water, sand, salt and iron filings into its four component parts.

Chemistry
1 answer:
katen-ka-za [31]3 years ago
7 0

You would use the density difference to separate the sand, evaporate the water out (the water vapor will cool back to water if collected). Then use a magnet to get the iron fillings out of the salt.

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Sulfur and oxygen react to produce sulfur trioxide. In a particular experiment, 7.9 grams of SO3 are produced by the reaction of
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  • <u>79%</u>

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<u>1) Balanced chemical equation:</u>

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<u>2) Mole ratio:</u>

  • 2 mol S : 3 mol O₂ : 2 mol SO₃

<u>3) Limiting reactant:</u>

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         n = 7.0 g / 32.065 g/mol = 0.2183 mol S

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<u>4) Calcuate theoretical yield (using the limiting reactant):</u>

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<u>5) Yield in grams:</u>

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<u>6) </u><em><u>Percent yield:</u></em>

  • Percent yield, % = (actual yield / theoretical yield) × 100
  • % = (7.9 g / 10.0 g) × 100 = 79%
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