Răspunsuri

2014-08-27T12:42:17+03:00
Nr moli = masa de substanta/masa molara a substantei
Exemplu:Cati moli reprezinta 200 g carbonat de calciu.
masa molara CaCO3 = 40+12+3*16=100g/mol
nr moli = 200/100 = 2 moli
dar din moli in grame cum transform?
am aflat, mersi orium