Three quarts of oil weigh approximately how many pounds?

Three quarts of oil weigh approximately how many pounds?

• A. 4.5 lbs
• B. 5.0 lbs
• C. 5.6 lbs
• D. 6.0 lbs

Answer: (C)

Weight of a liquid comes from its density times its volume. For motor oil, a typical density is about 0.89 kg per liter (roughly 0.89 g/mL). One quart is 0.946 liters, so the mass of one quart is around 0.946 × 0.89 ≈ 0.84 kg, which is about 1.85 pounds. For three quarts, multiply by three: 0.84 kg × 3 ≈ 2.52 kg, or about 5.6 pounds. Variations in oil type and temperature can shift this a bit, but 5.6 pounds is a solid, reasonable estimate for three quarts.

Weight of a liquid comes from its density times its volume. For motor oil, a typical density is about 0.89 kg per liter (roughly 0.89 g/mL). One quart is 0.946 liters, so the mass of one quart is around 0.946 × 0.89 ≈ 0.84 kg, which is about 1.85 pounds. For three quarts, multiply by three: 0.84 kg × 3 ≈ 2.52 kg, or about 5.6 pounds. Variations in oil type and temperature can shift this a bit, but 5.6 pounds is a solid, reasonable estimate for three quarts.