Chandra wants to know how many moles are contained in 150 point 0 g CCl sub 4 (carbon tetrachloride). What quantity of CCl sub 4 should she use to make this conversion?

To convert a sample’s mass in grams to moles, divide the mass by the substance’s molar mass, measured in grams per mole. Chandra should therefore use the molar mass of CCl₄; a mole ratio is used for converting between substances in a chemical reaction, not for converting grams to moles.

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