A sealed flask contains gaseous chlorine composed of 75 % molecules and 25 % molecules

CHEMISTRY · Subjective · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties

Problem

A sealed flask contains gaseous chlorine composed of 75 %

^{35}\text{Cl}_2

molecules and 25 %

^{37}\text{Cl}_2

molecules. State whether this sample is a pure substance or a mixture and justify your choice in one or two sentences.