500
I had to carry a 5-gallon container of water from my car, I wondered its mass. I looked up on the web and found that 1 lb = 0.453542 kg and 1 qt = 0.946353 liters and that there are 4 quarts in 1 liter. Remember that for water 1 g = 1 ml. Its mass was _________.
What is 42 lbs.