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V1= 500cm3= 0,5 dm3
Cm1= 1,4 mol/dm3
Cm= ms/M*V
ms= Cm*M*V
M HNO3= 63 g/mol
ms= 1,4 mol/dm3 * 63g/mol * 0,5 dm3= 44,1 g
roztwór 2:
V2= 100cm3= 0,1 dm3
Cm2= 0,5 mol/dm3
ms2= 63 g/mol* 0,5 mol/ dm3 * 0,1 dm3= 3,15 g
roztwór 3:
ms3= ms1+ms2
ms3= 44,1g + 3,15g= 47,25g
V3= 1 dm3
Cm3= ms3/ M*V3
Cm3= 47,25/ 63g/mol*1dm3= 0,75 mol/dm3
:)