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Submitted by marijamarr on Wed, 02/19/2014 - 12:07
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Koliko je grama bezvodnog natrijum-sulfata potrebno za pripremanje 10dm3  8% rastvora, gustine 1.075g/cm3?

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milicaradenkovic - Wed, 02/19/2014 - 13:24

Na2SO4

mr=ro*V=10000*1.075=-10750 g

ms=mr*w=0.08*10750=860 g