Question

O solutie este formata fin 50 g zahar si 150 g apa . Calculati concentratia . 
       Ajutati-ma va rog ! 

Answer 1

md=50 g zahar
mapa=150 g
ms=md+mapa=50+150=200g
c=md/ms×100⇒c=5000/200=25 %

Answer 2

$Zaharul~se~dizolva~in~apa,~concentratia~procentuala~este: \\ \\ C= \frac{m_d*100}{m_s} \\ \\ m_d=50g \\ \\ m_s=150+50=200g \\ \\ C= \frac{50*100}{200} \\ \\ C= \frac{5000}{200} \\ \\ C=~25~la~suta$