The molecular weight of sucrose (C₁₂H₂₂O₁₁), table sugar, is ________ amu (rounded to one decimal place).

Question

Quizplus · Accepted Answer

To calculate the molecular weight of sucrose, we need to add up the atomic weights of all the atoms in its chemical formula. The atomic weights of carbon, hydrogen, and oxygen are 12.01, 1.01, and 16.00, respectively. The chemical formula of sucrose has 12 carbon atoms, 22 hydrogen atoms, and 11 oxygen atoms. Therefore, the molecular weight of sucrose can be calculated as:

12(12.01) + 22(1.01) + 11(16.00) = 342.3 amu

The closest option to this answer is B.

The Molecular Weight of Sucrose (C12H22O11), Table Sugar, Is ________

The Molecular Weight of Sucrose (C₁₂H₂₂O₁₁), Table Sugar, Is ________