1.
A(Cl)= 35,5 => 1 mol Cl2 = 35,5x2 = 72 g
1 mol Cl2 ............ 72 g ................. 2x6,022x10la23 atomi
6 moli ................. m ......................... N
calculeaza
2.
A(I) = 127 => 1 mol I2 = 127x2 = 254 g
1 mol I2 ................... 254 g .................... 2x6,022x10l23 atomi
3 moli ...................... m .............................. N
calculeaza