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4 March, 22:30

How many moles of silver atoms are in 1.8 Ã - 10^20 atoms of silver?

a) 3.0 Ã - 10^2

b) 1.1 Ã - 10^44

c) 3.3 à - 10^â€"3

d) 3.0 à - 10^â€"4

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Answers (1)
  1. 4 March, 22:38
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    1.8x10^20 atoms x (1 mole / 6.022x10^23 atoms) = 3.0x10^-4 mole
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