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natali 33 [55]
3 years ago
6

Amount of moles in 3.34x10^34 formula units of Cu(OH)2

Chemistry
1 answer:
Naily [24]3 years ago
4 0

 The amount of  moles in  3.34 x10³⁴  formula unit of Cu(OH)₂ is 5.55 × 10¹⁰  moles

  <u><em>calculation</em></u>

 The  amount  of  moles  is calculated  using  the Avogadro's  law   constant

That  is  1  moles =  6.02 × 10²³  formula units

                 ? moles = 3.34 × 10³⁴ formula  units

<em>by cross  multiplication</em>

= {1 mole  ×3.34 ×10³⁴  formula units ] / 6.02 × 10²³ formula units}  = 5.55 ×10¹⁰  moles


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<u>Step 1:</u> Data given

A substance contains 85.7 % carbon and 14.3 % hydrogen.

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<u>Step 5:</u> Calculate mass of hydrogen:

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<u>Step 6 :</u>Calculate moles of hydrogen

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This means we have to multiply the empirical formula by 3

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