Solve for the Given Letter $$\left| \begin{array} { r r } - 7 & 9 \\3 & x\end{array} \right| = - 62$$

question 15

Multiple Choice

Solve for the given letter.
- $$\left| \begin{array} { r r } - 7 & 9 \\3 & x\end{array} \right| = - 62$$

• A)0
• B)5
• C)9
• D)50

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Definitions:

Pentane

A hydrocarbon compound with the molecular formula C5H12, consisting of five carbon atoms linked in a single chain.

Heptane

A straight-chain alkane with the formula C7H16, commonly used as a nonpolar solvent in laboratories.

IR Spectrum

An infrared spectrum, a graph displaying the absorption of infrared radiation by a substance at different frequencies, useful in identifying molecular structures.

Peak Intensity

A measure of the strength or amplitude of a peak in a spectrum, indicating the relative quantity of the analyte present.