-The chemical formula for octane is C8H18. How many moles of octane are present in 14.2 gram sample of octane?

-How many grams of the compound dinitrogen pentoxide are needed to have 20.0 grams of N?

-How many grams of sulfur are present in 27.5 grams of carbon disulfide?

-The chemical formula for caffeine is C8H10N4O2. How many grams of carbon are present in a 14.26 gram sample of caffeine?

-What mass of Fe contains the same number of atoms as 18.53 grams of N?

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Jarrod RobelLv2

31 Dec 2019

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