Răspunsuri

2014-03-13T22:51:22+02:00
Numarul de moli se calculeaza dupa urmatoarea formula:
n=m/M
M=masa moleculara
Deci:
320g So3
n=m/M => n=320/M =>n=320/80 =>n=4,Deci 4 moli
M=MS + 3MO=32+3*16=32+48=80

63g HNO3
M=MH + MN +3 MO=1+14+48=63
n=m/M=> n=63/63 => n=1