Question

which graph correctly depicts the relationship between volume and temperature when pressure and amount of gas are constant?

Explanation:

When pressure and amount of gas are constant, Charles's Law states that volume (V) is directly proportional to absolute temperature (T in Kelvin), i.e., \( V \propto T \). This means as temperature increases, volume increases linearly. The first graph shows a direct linear relationship, the second shows inverse proportionality, and the third shows a negative linear relationship. Only the first graph matches Charles's Law.

Answer:

The first graph (Volume vs. Temperature with a positive linear slope)