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Percent CompositionIntroductionThe percent composition of a compound is the percent, by mass, of each individual element within the compound. As an example, consider table salt, NaCl.46383721082300The mass of sodium (Na) in one mole of the compound is 23.0g.The mass of chlorine (Cl) in one mole of the compound is 35.5g. The total molar mass of the compound is 58.5g.23.0g out of 58.5g of table salt is the element sodium. 23.0g/58.5g = 0.39 or 39% sodium.35.5g out of 58.5g of table salt is the element chlorine. 35.5g/58.5g = 0.61 or 61% chlorine.A typical canister of table salt holds about 737 grams. By using the percent composition of NaCl, we can calculate that…5621765764700737g x 0.39 = 287.4g of sodium (Na) is present in the canister. 737g x 0.61 = 449.6g of chlorine (Cl) is present in the canister.Practice5250980698500How many grams of carbon, hydrogen, and oxygen are present in a 5 pound (2260g) bag of sugar? The formula for sucrose is C12H22O11. 565288130300How many grams of sodium, hydrogen, carbon, and oxygen are present in a one-pound (454g) box of baking soda (sodium bicarbonate)? 56094528003700Milk of magnesia is a medication used to treat constipation, upset stomach, and heartburn. It is made of magnesium hydroxide. How many grams of each element are present in a bottle (466g)?5622208508000How many grams of each element would be present in a 1 Liter (1050g) bottle of pure vinegar (acetic acid)? right8238400A box of iron nails that have all completely rusted through has a mass of 85g. What is the mass of each element within the rust? Rust is iron (III) oxide. ................
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