The Use of __________ Helps to Control for the Effect

question 67

Multiple Choice

The use of __________ helps to control for the effect of observer bias.

• A)blind observers
• B)a single trained observer
• C)randomly selected observers
• D)none of the above

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Definitions:

Vaporized

Turned into vapor, typically through the application of heat, changing from a liquid or solid state into a gaseous state.

Gas Chromatograph

A gas chromatograph is an analytical instrument used to separate, analyze, and identify compounds in a gaseous sample based on their different boiling points.

Boiling Points

The temperature at which a substance transitions from the liquid phase to the gas phase under standard atmospheric pressure.

Retention Time

The time taken for a substance to travel through a chromatography column to the detector, a critical parameter for identifying substances in the mix.