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Use dimensional analysis to solve all stoichiometric calculations. Round answers to the correct # of significant...

Use dimensional analysis to solve all stoichiometric calculations. Round answers to the correct # of significant figures.
1a Caffeine’s formula is C8H10N4O2, how many moles are in 345.0 grams of caffeine?
1b How many molecules of caffeine are present in this sample?
1c What is the total number of atoms in this sample of caffeine?
1d How many moles of liquid benzene (C6H6) are in 2.52 L of this liquid? The density of benzene is 0.8765 g/cm3 (5)

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