Question

What is missing from the temperature and volume graph shown at right?

A graph with horizontal axis labeled temperature in kelvins, and the vertical axis labeled 0.6, 0.8, and 1. A line rises slightly from the far left, about 1/3 of the way up the vertical axis, across the graph to go off the right-hand edge near the top of the graph.

Answer 1

The graph is missing the origin — 0 K (and 0 volume). By Charles's law V ∝ T (in kelvins), the V vs T line should pass through (0 K, 0 volume).