how many moles are there in 3g of Na_2_ CO


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Question Number 32845 by Rio Mike last updated on 03/Apr/18

$h o w m a n y m o l e s a r e t h e r e i n 3 g o f$ ${N a}_{2_{}} {C O}_{3}$
	Answered by Joel578 last updated on 04/Apr/18

	$M r = 2 (23) + 12 + 3 (16) = 106$ $n = \frac{m}{M r} = \frac{3}{106} = 0.0283 mol$
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