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Determine (a) which of the following chemicals, ammonium chloride, calcium chloride or sodium chloride would be best for lowering the temperature of water in a cold pack and (b) if the amount of the b ...
On a fall night, you’ve probably seen fireflies glowing in the bushes. Fireflies use chemiluminescence, a very efficient process that converts energy to light. Light sticks use a similar process. Do y ...