Răspunsuri

2014-11-19T16:34:09+02:00
C% =  \frac{ m_{d} }{ m_{s} }  · 100
 m_{d} = 300g \\  m_{apa(s)} = 170g

C%=  \frac{300}{170} ·100
C% = \frac{30}{17} = <strong>1, 76</strong>
Ignora'' <strong>'' alea nu stiu de unde au aparut :))
ms oricum