Rank the following samples in mass from least to greatest?
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Rank the following samples in number of atoms from least to greatest. a) 1.5 mol of K atoms b) 64 g of S c) 20 g of Be d) 25 g of Na
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Answer:
atomic mass of S = 32.07, 64 grams of S = 64/32.07 ~= 2 moles atomic mass of Be = 9.01, 20 grams of Be = 20/9.01 ~= 2.2 moles atomic mass of Na = 22.99, 25 grams of Na = 25/22.99 ~= 1.1 moles. The Na sample has the fewest atoms, followed by K, then S, then Be.
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Other answers
c, d, a, b I think
silverpearl
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