What is one of the main uses of analytical techniques in pollution science?

• To increase pollution levels

• To ignore environmental issues

• To identify and measure pollutants

• To create new pollutants

Which of the following is NOT a structural analysis technique mentioned?

• X-ray Crystallography

• Nuclear Magnetic Resonance

• Mass Spectrometry

• Infrared Spectroscopy

What does mass spectrometry help determine about a molecule?

• Its temperature

• Its color

• Its taste

• Its molecular mass and structure

In the mass spectrum of ethanol, what does a peak at 15 represent?

• A water molecule

• A COOH group

• A CH3 group

• A nitrogen atom

If a compound has an empirical formula of CH2O and a molecular mass of 60, what is its molecular formula?

• CH2O

• C2H4O2

• C3H6O3

• C4H8O4