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Answered 2015-09-01 16:43:17

20 g anhydrous sodium carbonate is equivalent to 0,188 moles.

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Answered 2017-02-14 12:42:15

molar mass Na2CO3 = 106 g/mol
20 g x 1 mol/106 g = 0.189 moles = 0.19 moles (to 2 significant figures)

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