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Zad.
Oblicz stężenie molowe 30% perhydrolu(H2O2) w gęstośći 1,11g/cm3 ?
M ( H 2 O 2 ) = 34 g / mol
V = 100 cm ³
mr = V * d
mr = 100 * 1 , 11
mr = 111 g
ms = ( 30 * 111 ) / 100
ms = 33 , 3 g
n = 33 , 3 / 34
n = 0 , 979 mol
C = n / V
C = 0 , 979 / 0 , 1
C = 9 , 79 mol / dm ³
Proszę :*
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M ( H 2 O 2 ) = 34 g / mol
V = 100 cm ³
mr = V * d
mr = 100 * 1 , 11
mr = 111 g
ms = ( 30 * 111 ) / 100
ms = 33 , 3 g
n = 33 , 3 / 34
n = 0 , 979 mol
C = n / V
C = 0 , 979 / 0 , 1
C = 9 , 79 mol / dm ³
Proszę :*