How Have Complex Molecules Such as Formaldehyde (H₂CO) Been Detected

question 163

Multiple Choice

How have complex molecules such as formaldehyde (H₂CO) been detected in interstellar clouds?

• A) by direct sampling by space probes
• B) by observing the chemical reactions in which they are created
• C) only by theoretical modeling since it is known that the component elements (H, C, O) are present in space
• D) by molecular emission lines

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Definitions:

Aromatic

Compounds containing one or more planar rings of atoms with delocalized π electrons, leading to enhanced stability.

Water Soluble

A characteristic of substances that can dissolve in water, making a homogeneous solution at a specified temperature and pressure.

Compound

A substance made up of two or more different elements chemically bonded together in a fixed proportion by weight.

Soluble

Capable of being dissolved in a solvent, typically referring to a substance's ability to dissolve in water.