The heat of vaporization of liquid is 1340 joules per gram. what is the minimum number of joules needed to change 40.0 grams of liquid to vapor at the boiling point? a) 33.5 b)1340 c)3,280 d) 53600

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.

The three types is stress that act on earths rocks are compression, tension, and

When water dissolves sugar, which process is not involved? o dissociation o hydration o surface area of the solute increases sa