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QUESTION
How many moles are there in 28 grams of ##CO_2##?
28 grams of ##CO_2## is equivalent to 0.64 moles of ##CO_2##
You divide the given amount by the Gram Formula Mass (Molar Mass) of ##CO_2##.
The Gram Formula Mass for ##CO_2## is the combined masses of the individual components of the compound.
12 g/mol (for Carbon) and 32 g/mol (for the two Oxygens) for a total of 44 g/mol.
28 g / 44 g/mol = 0.64 mol of ##CO_2##
