Uranium (vi) fluoride is crucial for the enrichment of weapons-grade uranium. if a 1.0 mol sample of helium effuses in 255 s, how many seconds will it take for the same amount of uranium (vi) fluoride to effuse under the same conditions?

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the population of unionid mussels in the hudson river decreased after zebra mussels were introduced. zebra mussels, a nonnative species, competed with the unionid mussels for food. the zebra mussels were able to outcompete the unionid mussels, allowing the zebra mussel population to increase dramatically over six years. the unionid mussel population decreased due to a lack of food.

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