1. Ce concentratie va avea solutia obtinuta prin dizolvarea a 45 g alcool in 180 g apa?
2. Ce...
Chemistry, 06.05.2020 00:23 daigle18383
1. Ce concentratie va avea solutia obtinuta prin dizolvarea a 45 g alcool in 180 g apa?
2. Ce concentratie va avea solutia rezultata prin adaugarea a 120 g apa peste 240 g solutie de concentratie 44%?
Va rog sa ma ajutati cat mai repede.
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