Question

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

Nov 13, 2012

mols Na = grams/molar mass.
1 mol conatins 6.02E23.

(175/23) x 6.02E23 = 4.58E24.

Nov 13, 2012

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