maseni udio

Submitted by Isidoraa on Mon, 01/06/2014 - 19:34
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Izracunaj maseni udio rastvora koji nastaje mijesanjem 200g 30% i 700g 60% rastvora nitratne kisjeline.

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milicaradenkovic - Mon, 01/06/2014 - 20:06

ms1=w1*mr1=200*0.3=60 g

ms2=w2*mr2=700*0.6=420 g

msu=ms1+ms2=420+60=480 g

mru=mr1+mr2=200+700=900 g

w=msu/mru=480/900=0.533=53.3 % HNO3