[tex]Cp=\frac{m_s}{m_r}*100\%\\\\6\%=\frac{m_s}{600g}*100\%\\\frac6{100}=\frac{m_s}{600g}\\100m_s=6*600g /:100\\m_s=6*6g\\m_s=36g\\\\m_r_2=m_r_1+m_{rozp}\\Cp_2=4\%\\\\4\%=\frac{36g}{600g+m_{rozp}}*100\%\\\frac4{100}=\frac{36g}{600g+m_{rozp}}\\4(600g+m_{rozp})=36g*100 /:4\\600g+m_{rozp}=900g /-600g\\m_{rozp}=300g\\\\\underline{\text{Nalezy dolac 300g wody}}[/tex]
