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Posted by Anonymous on Monday, November 12, 2012 at 11:13pm.

how many atoms are in a sample of 175 g of sodium (Na)? 4.58 x 1024 or 1.42 x 1027?

mols Na = grams/molar mass. 1 mol conatins 6.02E23. (175/23) x 6.02E23 = 4.58E24.

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