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The fluoride concentration in a sample of toothpaste is 500 ppm. What is the mass of fluoride present in a tube of toothpaste containing 200 g paste?

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The fluoride concentration in a sample of toothpaste is 500 ppm. What is the mass of fluoride present in a tube of toothpaste containing 200 g paste?

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So mass of fluoride = 0.1 g

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