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aleksandrvk [35]
3 years ago
7

Help please 20points

Chemistry
2 answers:
lions [1.4K]3 years ago
6 0

Answer:

D

Explanation:

D is the answer because this is the only one having to do with genetics. Fox's genetics changed because it's environment changed.

Anvisha [2.4K]3 years ago
6 0
The answer is D, it is the only answer that relates to genes.
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How many grams of magnesium acetate are in 8.95x10^23 formula units?
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Answer:

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Explanation:

  • Particles could refer to atoms, molecules, formula units.
  • <em>Knowing that every one mole of a substance contains Avogadro's no. of molecules (NA = 6.022 x 10²³).</em>

<em><u>Using cross multiplication:  </u></em>

1.0 mole → 6.022 x 10²³ molecules.

??? mole → 8.95 x 10²³ molecules.

  • The no. of moles of magnesium acetate = (8.95 x 10²³ molecules) (1.0 mole) / (6.022 x 10²³ molecules) = 1.486 mol.

∴ The grams of magnesium acetate are in 8.95 x 10²³ formula units = n x molar mass = (1.486 mol)(142.394 g/mol) = 211.63 g.

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