Question

1. which of the following graphs best represents the relationship between the volume and temperature of an ideal gas at constant pressure?

Explanation:

Step1: Recall Charles's Law

For an ideal gas at constant pressure, $V = kT$ (where $k$ is a constant), which is a direct - proportionality relationship.

Step2: Analyze the graph shape

A direct - proportionality relationship between two variables $V$ (volume) and $T$ (temperature) is represented by a straight - line graph passing through the origin. The equation $y = mx$ (in this case $V$ is $y$ and $T$ is $x$) has a positive slope.

Answer:

The second graph (the one with a straight - line passing through the origin and having a positive slope) best represents the relationship between the volume and temperature of an ideal gas at constant pressure.