Question

1. a glucose molecule has a molecular formula of c₆h₁₂o₆. when two glucose molecules are linked together to make maltose, the resulting molecular formula is c₁₂h₂₂o₁₁. briefly explain why the molecular formula of maltose is not c₁₂h₂₄o₁₂.
2. roughly how much more sugar does the average american consume compared with the fda recommended allowance? use figure 3.6 on page 42 of your textbook.

Explanation:

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When two glucose molecules ($C_6H_{12}O_6$) form maltose, a condensation reaction occurs. A water molecule ($H_2O$) is removed during the linkage. So, 2 glucose molecules have 12 carbon, 24 hydrogen and 12 oxygen atoms in total, but after losing 2 hydrogen and 1 oxygen atom (from $H_2O$), the resulting maltose has the formula $C_{12}H_{22}O_{11}$.

Step1: Identify values

The FDA - recommended sugar allowance is 40 lbs and the average American consumes 130 lbs of sugar.

Step2: Calculate difference

Subtract the FDA - recommended amount from the average American consumption: $130 - 40$.
$130-40 = 90$

Answer:

A water molecule is removed during the condensation reaction that links two glucose molecules to form maltose.

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