Question 1330 Deck General

The correct answer is D) heavier. Liquefied petroleum gas (LPG) vapors, such as propane and butane, are heavier than air. This is because the molecular weight of LPG vapors is higher than the molecular weight of air. Specifically, the molecular weight of propane is 44.1 g/mol, while the molecular weight of air is approximately 28.9 g/mol. The higher molecular weight of LPG results in the vapors being denser and heavier than air. The other options are incorrect because A) LPG vapors are not lighter than air, B) the weight of LPG vapors is not the same as air, and C) the weight of LPG vapors compared to air is not variable but rather consistently heavier.