Answer
Approximately 64.62% of Carbon.
Work Step by Step
1. Find the mass of $C_{7}H_{14}O_{2}$:
C: 12 x 7 = 84
H: 1 x 14 = 14
O: 16 x 2 = 32
84 + 14 + 32 = 130
2. Divide the mass of Carbon by the total mass of the molecule:
$\frac{84}{130}$ $\approx$ 0.6462.
3. Multiply the result by 100%:
0.6462 x 100% = 64.62%
