Răspunsuri

2014-09-29T17:22:57+03:00
Mg + 2 HCl ---? MgCl2 + H2
24 g Mg......2*36,5 g HCl........6,022 * 10 la 23 molecule H2
4,8 g Mg.........x h HCl..............y molecule
x = 14,6 g HCl
masa solutiei = md/c*100=14,6/15 * 100 = 97,333 g solutie
y = 1,2044 * 10 la 23 molecule