ile gramów siarczanu (VI) sodu znajduje się w 300cm sześciennych dwu molowego roztworu?
Cm = 2 mol/dm3 Vr = 300cm3 = 0,3 dm3 Cm = n/Vr -> n = Cm x Vr n = 2 mol/dm3 x 0,3 dm3 = 0,6 mola 1 mol Na2SO4 - 142g 0,6 mola - x x = 25,2g
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Cm = 2 mol/dm3
Vr = 300cm3 = 0,3 dm3
Cm = n/Vr -> n = Cm x Vr
n = 2 mol/dm3 x 0,3 dm3 = 0,6 mola
1 mol Na2SO4 - 142g
0,6 mola - x
x = 25,2g