Respostas

2014-03-24T18:24:35-03:00
Ola,

HCl = 36,5g = 1 mol

1 mol = 6,02.10^23 moleculas = 22,4L (para gas) = 36,5g
3 mol = x moleculas

multiplica cruzado:
18,06.10^23 moleculas = 1,806.10^24 moleculas

espero ter ajudado!
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