Which physical property and change in matter is utilized by distillation to separate two liquids in a mixture?

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

Which of these conditions most likely produces an unstable isotope?

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.