Respostas

2013-09-22T18:18:10-03:00
1 mol de ouro ----------- x
1 mol ----------------------- 6,02 x 1023

x= 6,02 x 1023

3 mol de oxigênio -----------------x
1 mol----------------------------------- 6,02 x1023

x= 6,02 x1023.3
x= 1,806 x 1024

5 mol de bário--------------------- x
1 mol --------------------------------6,02 x 1023

x= 6,02 x 1023 . 5
x= 3,010 x 1024