Masa molara a compusului= 2x35,5g Cl+ 16x gO
in (71+16x)g compus.........16x gO
100g..............................52,98g
1600x= 847,7x+ 3761,1-----> x=5------. Cl2O5 cu masa molara
M(miu)= (71gCl+80gO)/mol= 151g/mol
Se stie ca 1 mol de compus contine 6,023x10²³molecule -->
daca 6,023x10²³molecule.....au masa 151g
1 molecula...................................m= --------------------calculeaza !!!!
