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0,1cm razy 5cm razy 5cm = 2,5cm3
WZOR NA GESTOSC
d = m/v
1PR. 17,85g dzielimy 2,5cm3 = 7,14g/cm3
2 PR. 6,75g dzielimy 2,5cm3 = 2,7g/cm3
3 PR 19,65g dzielimy 2,5cm3 = 7,86g/cm3
1 cynk
2 glin
3 zelazo