If 50 gallons of water that did not convert to steam are used, what is the total added weight?

If 50 gallons of water that did not convert to steam are used, what is the total added weight?

• A. 208 pounds
• B. 416 pounds
• C. 416.5 pounds
• D. 830 pounds

Answer: (D)

Water has a known approximate weight per unit volume, about 8.33 pounds for each US gallon. If none of the 50 gallons vaporizes, the total added weight is simply the weight of that liquid water: 50 × 8.33 = 416.5 pounds (rounding variations give about 416 to 417 pounds). So the added weight would be around 416.5 pounds, not a higher or doubled value. The key idea is that only liquid water contributes to the weight in this scenario; vaporization would change where that weight ends up, not how much there is.

Water has a known approximate weight per unit volume, about 8.33 pounds for each US gallon. If none of the 50 gallons vaporizes, the total added weight is simply the weight of that liquid water: 50 × 8.33 = 416.5 pounds (rounding variations give about 416 to 417 pounds). So the added weight would be around 416.5 pounds, not a higher or doubled value. The key idea is that only liquid water contributes to the weight in this scenario; vaporization would change where that weight ends up, not how much there is.