Z def. stęż. procent.0,1g saletry ------ 100g roztworuxg saletry --------- 200g roztworux = 0,2g saletry200g roztworu - 0,2g saletry = 199,8g wody
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Z def. stęż. procent.
0,1g saletry ------ 100g roztworu
xg saletry --------- 200g roztworu
x = 0,2g saletry
200g roztworu - 0,2g saletry = 199,8g wody