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A 100 gram sample of iron ore was found to contain 44g of iron. How many grams of iron are in a 450 gram sample or the ore?
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Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?
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A 100 gram sample of iron ore was found to contain 44g of iron. How many grams of iron are in a 450...
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