Question

In cate kilograme de CaO se va gasi un numar de perechi de ioni Ca2+,O2-egal cu numarul de molecule din 64g So2?

Answer 1

M,SO2= (32gS+32gO)/mol= 64g/mol
n,mol= m/M---> n= 64g/64g/mol=1mol SO2
se stie ca 1 mol compus contine numarul lui Avogadro    N,A=6,023X10²³molecule

deci 1molSO2=1molCaO.....CONTIN ,fiecare, 6,O23X10²³molecule

M,Cao= (40gCa+16gO)/mol= 56g/mol
56g CaO............6,023X10²³ molec
1000g...............................x= 6,023x10²³x10³/56=.................calculeaza !!!!!