200 stacked pennies, 100 stacked nickels, and 1.1 pints of water weigh 500 grams. You can demonstrate this by zeroing out your scale with the container you intend to fill, then adding the 1.1 pints of water to it. You can be certain of the weight of the coins, because every nickel is known to weigh 5 grams and every penny weighs 2.5 grams.
Though it's not exact, 88 quarters also weigh about 500 grams. 4.5 cups of flour weigh 500 grams as well. 44 US Half Dollars will weigh almost exactly 500 grams. 500 grams is equal to approximately 1.1 pounds.