48g NaCl / 100g H₂O /:2,5 19,2g NaCl / 40g H₂O Odp. Trzeba rozpuścić 19,2g NaCl
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48g NaCl / 100g H₂O /:2,5
19,2g NaCl / 40g H₂O
Odp. Trzeba rozpuścić 19,2g NaCl