Chemistry Chapter 1: The Language of Chemistry
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Questions and Answers

If $x = 3 + 2\sqrt{2}$, what is $\frac{x}{3 - 2\sqrt{2}}$ equal to?

  • $\frac{3 + 2\sqrt{2}}{3 - 2\sqrt{2}}$
  • $\frac{3 + 2\sqrt{2}}{1}$
  • 6 (correct)
  • $\frac{x}{6}$
  • If $x = \sqrt{5} - 2$, then $x + \frac{1}{x}$ is equal to:

  • $4\sqrt{5}$
  • $\sqrt{5}$
  • 4 (correct)
  • $2\sqrt{5}$
  • If $x = 1 + \sqrt{2}$, then $x + \frac{1}{x}$ is:

  • 4 (correct)
  • $4\sqrt{2}$
  • 8
  • $2\sqrt{2}$
  • $\sqrt{5} - \sqrt{3}$ equals:

    <p>$\sqrt{5} - \sqrt{3}$</p> Signup and view all the answers

    What is the value of $\frac{5 - \sqrt{7}}{5 + \sqrt{7}}$?

    <p>$8 - \sqrt{15}$</p> Signup and view all the answers

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