Final answer:
To determine how many pounds are in 400 SCF of LPG, we need to know the specific gravity of LPG. If 1 SCF of LPG weighs 0.5 pounds, then 400 SCF would weigh 200 pounds.
Step-by-step explanation:
LPG stands for Liquefied Petroleum Gas and is typically composed of propane and butane. To determine how many pounds are in 400 SCF (Standard Cubic Feet) of LPG, we need to know the specific gravity of LPG. The specific gravity is the ratio of the density of a substance to the density of a reference substance, usually water.
For example, if the specific gravity of LPG is 0.5, then 1 SCF of LPG would weigh 0.5 pounds. Therefore, 400 SCF of LPG would weigh 400 * 0.5 = 200 pounds.
Therefore, the correct answer is c) 200 pounds.