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12 June, 13:44

How many molecules of h2O are in 1.7 moles of H2O

A) 1.02x10^24

B) 30.6

C) 2.7x10-24

D) 38.1

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Answers (1)
  1. 12 June, 14:13
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    From the Avogadro's law one mole of a substance contains 6.022 * 10^23 particles.

    Therefore; 1 mole of water contains 6.022 * 10^23 molecules

    Hence 1.7 moles will contain;

    1.7 * 6.022 * 10^23 molecules

    = 10.2374 * 10^23 molecules

    = 1.024 * 10^24 molecules

    ≈ 1.02 * 10^24 molecules
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