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300g sare
170cg apa
aflati concentratia procentuala



Răspuns :

[tex] \frac{300}{170} [/tex]=1,763%
C% = [tex] \frac{ m_{d} }{ m_{s} } [/tex] · 100
[tex] m_{d} = 300g \\ m_{apa(s)} = 170g[/tex]

C%= [tex] \frac{300}{170} [/tex]·[tex]100[/tex]
C% =[tex] \frac{30}{17} = 1, 76 [/tex]