Formaldehyde, acetic acid, and glyceraldehyde are three molecules that share the same empirical formula (CH2O) but have different molecular formulas. Given the following information, what are the molecular formulas of these compounds? a) Formaldehyde molecules each contain 1 carbon atom. b) Acetic acid has a molar mass of 60.05 g/mol. c) Glyceraldehyde molecules each contain 6 hydrogen atoms.

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Q: 1. Recognize the difference between mass and weight.

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.