do 190 gramów roztworu soli o stężeniu 5% dosypano 10g soli. oblicz stężenie otrzymanego roztworu.
190*5%+10g*100%=(190g+10g)x%
950+1000=200x
x=9,75[%]
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190*5%+10g*100%=(190g+10g)x%
950+1000=200x
x=9,75[%]