Benzene and acetylene have the same empirical formula, CH. However, benzene has a molar mass of 78 g, and acetylene has a molar mass of 26 g, what are the molecular formulas of benzene and acetylene?
molecular formula for
Since the question already gave the empirical formula for both compounds, which is CH. Let's figure out the subscript, n, in
To do so, let's use the molar mass and divide by the formula mass of the empirical formula, CH, 12 + 1 = 13 g.
molecular formula for benzene =
molecular formula for acetylene =