Respostas

2014-09-01T09:36:09-03:00
Olá!

100mL = 0.1 L
150mL = 0.15 L
VF = 250mL = 0.25 L

M1*V1 + M2*V2 = MF*VF
0.5*0.1 + 0.8*0.15 = MF*0.25
0.05 + 0.12 = MF*0.25
0.17 = MF*0.25

MF = 0.68mol/L

Espero que tenha ajudado!
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