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7 Organic chemistry

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Question 76

A teacher asks a student to build a model of one molecule of an alkane. The model must contain 29 atoms in total.

The student proposes that the model should have the molecular formula C10H19\text{C}_{10}\text{H}_{19}C10​H19​.

The numbers of carbon and hydrogen atoms in an alkane are related by the general formula CnH2n+2\text{C}_n\text{H}_{2n+2}Cn​H2n+2​.

a.

Evaluate the student's proposed molecular formula.

[3]
b.

Calculate the molecular formula of the alkane whose model would contain 29 atoms in total.

[2]
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7 Organic chemistry Questions

  1. GCSE
  2. /Chemistry
  3. /7 Organic chemistry

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