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Common salt obtained from sea-water contains 8.775% NaCl by mass. The number of formula units of NaCl present in 25 g of this salt

Common salt obtained from sea-water contains 8.775% NaCl by mass. The number of formula units of NaCl present in 25 g of this salt is: A 3.367 1023 formula units B 2.258 1022 formula units C 3.176 x 1023 formula units D 4.73 x 1025 formula units

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