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- RAM: NACL (22+35.45)
- =57.45m
- mols= mass/molecular weight
- =o.25g/57.45m
- =0.004g/m
- diutions = c1*v1=c2*v2
- =0.25*100
- =25
- =0.004*100
- =0.4
- ans=25=0.4
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