Q.
Find the number of mole of sodium atoms that are present in 2.3 g sodium (Na = 23).
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answer is 0.1.
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Detailed Solution
g. at. wt. of Na =23g;23g of Na=1 mole Na atoms 2.3g of Na=1molNa atoms 23g of Na×2.3g of Na =0.1mol Na atoms
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