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V = 1250 cm3
d = 0,67 g/cm3
szukane:
m
rozwiązanie:
m = d x V
m = 1250cm3 x 0,67g/cm3
m = 1250 x 0,67g (cm3 skracamy/wymazujemy)
1250 x 0.67g = 837,5g
d = 0,67 g/cm3
d = m/V
m = d x V
m = 0,67 g/cm3 x 1250 cm3 = 837,5 g - masa substancji