Răspuns:
m apă vaporizată=133,34g
Explicație:
Salutare! ʕ•ᴥ•ʔ
[tex]m_{s1}=200g[/tex]
[tex]c_1=15\%[/tex]
[tex]c_2=3 \times c_1=3 \times 15\% = 45\%[/tex]
[tex]m_{apa \: vaporizata} =? [/tex]
[tex]m_{d1}=\frac{c_1 \times m_{s1}} {100}[/tex]
[tex]m_{d1} =m_{d2}[/tex]
[tex] m_{s2}=\frac {m_{d2} \times 100}{c_2}[/tex]
[tex]m_{apa \: vaporizata}=m_{s1}-m_{s2}[/tex]
[tex]m_{d1} =\frac {15 \times 200g}{100}=30g[/tex]
[tex]m_{d1} =m_{d2} =30g[/tex]
[tex]m_{s2} =\frac {30g \times100} {45}=66,66g[/tex]
[tex]m_{apa vaporizata} = 200g - 66,66g =133,34g[/tex]
Succes! (◕‿-)
