Respostas

2014-07-18T14:53:39-03:00
Massa molar: 1.1+1.14+3.16=63 g/mol

63 g - 1 mol
252g - x mols

X= 252/63=4 mols

1 mol - 6.10^23 moléculas
4 mols - y
Y = 24.10^23 moléculas