How many grams are in an iced tea from McDonald's?

The unsweetened iced tea at McDonald's contains zero grams of fat, carbs, and protein. It is, after all, nearly totally water. The small (16-oz.) size contains about 10 mg of sodium. Sixteen ounces of water is nearly half a liter (473 ml). Since one milliliter of water weighs one gram, we can say that a small iced tea weighs about 473 grams.