Răspunsuri

2014-05-25T19:38:48+03:00
1 mol Ca ( care are 40 g ) .......... 1 mol CaSO4 ( care are 40+32+64= 138g)
x moli Ca ( contin 40*x g) ..........10 moli CaSO4 ( 10*138=1380g)
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x = (10*1)/1 => x = 10 moli
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