The molecular weight of glucose (C₆H₁₂O₆), rounded to the nearest integer, is __________ amu. A)24 B)96 C)136 D)180 E)224

Question

Quizplus · Accepted Answer

To calculate the molecular weight, we need to sum up the atomic weights of all the atoms in the molecule (the subscript indicates the number of atoms). The atomic weights of C, H, and O are 12.01, 1.01, and 16.00 amu, respectively. The total molecular weight is:

(6 × 12.01) + (12 × 1.01) + (6 × 16.00) = 72.06 + 12.12 + 96.00 = 180.18 amu

Rounding to the nearest integer gives 180 amu, which is option D.

The Molecular Weight of Glucose (C6H12O6), Rounded to the Nearest

The Molecular Weight of Glucose (C₆H₁₂O₆), Rounded to the Nearest