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Relating Cause and Effect A chemistry student decided to weigh a bag of microwave popcorn before and after popping it. Following the directions on the bag, she opened it immediately after microwaving it to let the steam escape and then weighed it. She noticed that the mass of the unpopped popcorn was more than the mass of the popped popcorn. Was matter destroyed when the popcorn popped? Explain your answer.
Vanillin (used to flavor vanilla ice cream and other foods) is the substance whose aroma the human nose detects in the smallest amount. The threshold limit is per liter of air. If the current price of of vanillin is , determine the cost to supply enough vanillin so that the aroma could be detected in a large aircraft hangar with a volume of