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Protactinium-234 has a half-life of 1 minute. How much of a 400. g sample protactinium would remain after 4 minutes
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Mercury turns to a vapor at 629.88 k. how much heat is lost when 75.0 g of mercury vapor at 650 k condenses to a liquid at 297 k?
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Which of the following describes qualitative data? a) recording the temperature of a solid as it is warmed. b) noting the color of a solution as it is heated. c) measuring the volume of an object by water displacement. d) taking the mass of an object using a balance.
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Protactinium-234 has a half-life of 1 minute. How much of a 400. g sample protactinium would remain...
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