Question

Am nevoie urgent!!!! Pt testttt va rog!!

Answer 1

Salut!

presupun ca trebuie toate problemele din imagine.

II

c1/100=md1/ms1

c1/100=ms1-mh2o/ms1

c1/100=140-126/140

c1/100=14/140

c1=10

c2/100=md2/ms2

30/100=1,5/ms2

ms2=5

mh2o=ms2-md2=5-1,5=3,5

III

ms1=200g

c1=35%

ms2=600

c2=15%

c1/100=md1/ms1

35/100=md1/200

md1=70

c2/100=md2/ms2

15/100=md2/600

md2=90

c final/100=md final/ms final

md final=md1+md2=160

ms final=ms1+ms2=200+600=800

c final/100=160/800

c final=20%

IV

ms1=120

c1=40%

c2=25%

mh2o adaugat=?

c1/100=md1/ms1

40/100=md1/120

md1=48

c2/100=md2/ms2

md1=md2

25/100=48/ms2

ms2=192

mh2o adaugat = ms2-ms1=192-120=72g

Sper ca te-am ajutat!