4moles of solid nacl are added to 4 l water, where they dissociate completely. what's the total molar concentration of solutes in the resulting solution?

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.

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

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