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Glucose ($C_{6}H_{12}O_{6}$) is a monomer that can form naturally occurring polymers - HSC - SSCE Chemistry - Question 6 - 2006 - Paper 1

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Glucose ($C_{6}H_{12}O_{6}$) is a monomer that can form naturally occurring polymers. The approximate atomic weights for the elements which make up glucose are show... show full transcript

Worked Solution & Example Answer:Glucose ($C_{6}H_{12}O_{6}$) is a monomer that can form naturally occurring polymers - HSC - SSCE Chemistry - Question 6 - 2006 - Paper 1

Step 1

Calculate the molecular weight of one glucose monomer

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Answer

A glucose molecule (C6H12O6C_{6}H_{12}O_{6}) contains:

  • 6 Carbon atoms
  • 12 Hydrogen atoms
  • 6 Oxygen atoms

Using the approximate atomic weights:

  • Carbon: 12 g/mol
  • Hydrogen: 1 g/mol
  • Oxygen: 16 g/mol

The molecular weight of one glucose monomer is calculated as follows:

extMolecularWeight=(6imes12)+(12imes1)+(6imes16)=72+12+96=180extg/mol ext{Molecular Weight} = (6 imes 12) + (12 imes 1) + (6 imes 16) = 72 + 12 + 96 = 180 ext{ g/mol}

Step 2

Calculate the molecular weight of 5 glucose monomers

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Answer

For 5 glucose monomers, the total molecular weight is:

5imes180=900extg/mol5 imes 180 = 900 ext{ g/mol}

Thus, the approximate molecular weight of a polymer made from 5 glucose monomers is 900 g/mol.

Step 3

Determine the answer choice

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Answer

The calculated molecular weight of the polymer (900 g/mol) corresponds to option (D).

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