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Starch is represented by the formula C6 H10 O5

Therefore there are six Carbon's present, ten Hydrogens, and five oxygen's present in a single molecule of Starch.

We can determine the molecular weight of the Starch molecule if we know the weight of Carbon, Hydrogen, and Oxyegen in g/mol. And then multiple those individual g/mol weights by the number of each present in the molecule which can be determined by the formula. Then we take the products of these calculations and add them together to determine the total g/mol weight of the molecule in question.

So if,

C = 12.0107 g/mol

H = 1.00794 g/mol

O = 15.9994 g/mol

Then,

C(12.0107)*6 = 72.0642 g/mol

H(1.00794)*10 = 10.0794 g/mol

O(15.9994)*5 = 79.9970 g/mol

Now if we add these products together,

C Total 72.0642 g/mol

H Total 10.0794 g/mol

O Total 79.9970 g/mol

= 162.1406 g/mol

Therefore,

162.1406 g/mol is the molecular weight of Starch.

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15y ago

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