A 30,000-gallon tank is full of a dry chemical with a specific gravity of 1.35. What is the weight of the contents of the tank?

• A. 250,000 lbs.
• B. 337,770 lbs.
• C. 150,000 lbs.
• D. 400,000 lbs.

Answer: (B)

To determine the weight of the contents in the tank, you can use the specific gravity of the dry chemical and the volume of the tank.

First, recall that specific gravity is a measure of density relative to water. A specific gravity of 1.35 means that the dry chemical is 1.35 times as dense as water. The density of water is approximately 8.34 pounds per gallon.

To find the weight of the dry chemical:

1. Calculate the density of the chemical:

Density of chemical = Specific gravity × Density of water

Density of chemical = 1.35 × 8.34 lbs/gallon = 11.25 lbs/gallon.

2. Now, multiply the density of the dry chemical by the volume of the tank to find the total weight:

Weight = Density of chemical × Volume of tank

Weight = 11.25 lbs/gallon × 30,000 gallons = 337,770 lbs.

This calculation leads to the conclusion that the weight of the tank's contents is 337,770 pounds. Thus, the correct answer is indeed the one that reflects this calculation.