Question

Se amesteca 400 g saramura de c=15% cu 200g saramura de c=5%.Ce concentratie are solutia finala?​

Answer 1

Răspuns:

Explicație:

Solutia finala 400 + 200 = 600 g

md = 400*15/100 + 200*5/100 = 60 + 10 = 70 g sare

c = (70/600)*100 = 11,(6)% concentratia finala

Answer 2

ms1=400g

c1=15%

ms2=200g

c2=5%

c=md/ms*100

15=md1/400*100

md1=15*(400:100)

md1=15*4

md1=60g

5=md2/200*100

md2=5*(200:100)

md2=5*2

md2=10g

cf=mdf/msf*100

cf=md1+md2/ms1+ms2*100

cf=70/600*100

cf=70/6

cf=11,6%

sper că te-am ajutat. o seara frumoasa