Glucose, C H O

CHEMISTRY · Multi-part · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties

Problem

Glucose, C

_6

_{12}

_6

, is the primary energy molecule used in cellular respiration. A nutrition laboratory analyzes a sample that contains exactly

8.50\,\text{g}

of pure glucose. Use

N_A = 6.022 \times 10^{23}\,\text{mol}^{-1}

. (a) Determine the number of glucose molecules present in the

8.50\,\text{g}

sample. (b) Calculate the total number of carbon atoms contained in this sample. (c) Express the answer from part (b) in the form

a \times 10^{b}

with

1 \le a < 10

, and state the physical significance of the exponent

b

in terms of the scale of counting in chemistry.