You wish to determine whether a chunk of platinum is made of pure platinum or of a particular platinum alloy. To aid you in this determination, your friends Ed and Ted have each independently measured the density of the chunk. You collect their results, and use them to make Figure 1 (seen below). Lines marking the accepted density of platinum and the platinum alloy have been marked. Based on this figure, is it possible to tell whether or not the chunk of platinum is pure platinum? 22.5 22.0 21.5 21.0 20.5 20.0 19.5 Density (p) [g/cm] Ed Ted Pure platinum Platinum alloy Figure 1: Ed and Ted's measurements of the density of the chunk of platinum