Question

calculati cantitatea de magneziu aflat in 11,6 g de hidroxid de magneziu

Answer 1

11,6 g Mg(OH)2               MMg(OH)2=24+2.16+2=58

?g Mg                                58g Mg(OH)2-----------24g Mg
                                          11,6 g Mg(OH)2----------X

                                          X=11,6.24:58=4,8 g Mg