Question

1. for the following diagram, identify which two or more elements or gasses make up the unknown mixture. unknown mixture gas d gas c gas b gas a

Explanation:

Step1: Analyze the gas chromatogram principle

In gas chromatography, each gas or element has a specific retention time and forms a distinct band. If the unknown mixture has bands that match the positions (retention times) of bands from known gases (A, B, C, D), then those known gases are part of the mixture.

Step2: Match the bands

Looking at the diagram, the unknown mixture has bands that align with the bands of Gas A (one common band), Gas C (one common band), and Gas D (one common band).

Answer:

The unknown mixture is made up of Gas A, Gas C, and Gas D.