Asolution contains 35 grams of kno3 dissolved in 100 grams of water at 40°c. how much more kno3 would have to be added to make it a saturated solution?
(1) 29 g (3) 12 g
(2) 24 g (4) 4 g

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

Stage in which a star’s outer layers have started to cool and grow outward?

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.