Răspuns :

Danboghiu66id

Masa dizolvata: md=40g

Masa totala de substanta: m=200+40=240g

Concentratia:

c=md/m×100=40/240×100=100/6=16.66%

Raisa66id

Răspuns:

Bun,stim ca in 200g se pun 40g de zahar.Facem:

Apa=200g

Zahar=40g

Concentratia=?

Rezolvare:

200g+40g=240g

C=zahar×100=40g+200g

-------------- -------------- = 16,66(%)

240g

Sper ca te-am ajutat la problema! :D

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