Respostas

2013-11-15T17:05:59-02:00
1 mol - 6 x 10^23
x       - 1,56 x 10^24

x = 1,56 x 10^24 / 6 x 10^23

x = 0,26 x 10^1 mols é menor que 2,6 mols
2013-11-15T17:11:02-02:00
1,56/6,023=0,25x10^23moleculas