Question

Hydrocarbons are compounds that are composed of only carbon and hydrogen atoms. A hydrocarbon has a density of 2.59 g/L at STP. What is the molar mass of this hydrocarbon? Be sure to include units with your answer.

Answer 1

58.0 g/mol

• the molar mass of this given hydrocarbon

Answer 2

58.0 g/mol

Step-by-step explanation:

At STP, one mole occupies 22.4 liters. One mole of the hydrocarbon would have a mass of ...

(2.59 g/L)(22.4 L/mol) ≈ 58.0 g/mol