Determine the molar mass of the unknown substance
The sample of an unknown substance of .2436-g melts in 20.0 mL of cyclo-hexane. The density of cyclo-hexane found the 0.779-g/mL and the freezing point depression was 2.1 C. Determine the molar mass of the unknown substance.
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Calculate at what mass of aluminum can be formed by the Hall process within a period of 19.3 h, by using a current of4.1 MA? Explain in detail.
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A spelunker is surveying a cave. She follows a path which takes her a distance 173 straight west, then a distance 200 in the direction 45.0 east of south, then a distance 288 at 30.0 east of north. After a fourth un-measured displacement she finds
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