Question

zmieszano 200g 5% roztworu sacharozy i 300g 15% sacharozy.obl Cp-metoda krzyzowa-11%

Answer 1

200g 5%.........................15-x

..........................x%

300g 15% .........................x-5

200/300 = 15-x/x-5

200(x-5) = 300(15-x)

200x-1000 = 4500-300x

500x = 5500

x = 11%

Answer 2

 

 

200g                        15-cp

5%

                  500g

                    cp

 

300g                         cp - 5

15%

 

  200       15-cp

-------- = ----------

  300       cp - 5

 

200cp - 1000 = 4500 - 300cp

500cp = 5500

cp = 11

 

Stężenie procentowe po zmieszaniu wynosiło 11%

 

 

 

----------------------------------------------------------------------------------------------------

Litterarum radices amarae sunt, fructus iucundiores

 

Pozdrawiam :)