Select the correct location on the image. The graph shows a marble rolling down a curve from position 1 to position 5 in which position is potential energy of the marble greatest?

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Calculate the number of molecules present in 0.750 mol of mgo.

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.

Which would freeze at a higher temperature: the great salt lake or lake tahoe? a. lake tahoe would freeze at a higher temperature. b. the great salt lake would freeze at a higher temperature. c. both lakes would freeze at the same temperature.