Question

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Answer 1

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• Molecular formula of 4-ethyl-3,3-dimethyl heptane is $\sf C_{11} \sf H_{24}$

• Molecular formula of 2,3,5-trimethyl-4-propyl heptane is $\sf C_{13} \sf H_{28}$

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Full form of IUPAC is International Union of Pure and Applied Chemistry.

☯ The number of carbon atom in hydrocarbon is indicated by:-

• Meth is indicated for 1 carbon.

• Eth is indicated for 2 carbon.

• Prop is indicated for 3 carbon.

• But is indicated for 4 carbon.

• Pent is indicated for 5 carbon.

•Hex is indicated for 6 carbon.

• Any hydrocarbon which contains single bonds b/w carbon - carbon atoms are saturated and indicated by -ane.
• Any hydrocarbon which contains doble or triple bonds b/w carbon - carbon atoms are unsaturated and indicated by -ene for double bond and -yne for triple bond.

$\rule{200}{2}$

Answer 2

The number of carbon atom in hydrocarbon is indicated by:-

• Meth is indicated for 1 carbon.

• Eth is indicated for 2 carbon.

• Prop is indicated for 3 carbon.

• But is indicated for 4 carbon.

• Pent is indicated for 5 carbon.

•Hex is indicated for 6 carbon.

hope this helps you