Question

minim 2 probleme la alegere îmi trebuie pana la 8:30​

Answer 1

Răspuns:

Explicație:

1.

a.

ms=500g sol.

md=150g zahar

c=?

c= md .100 : ms

c= 150 .100 : 500=30%

b.

md=500g

mapa= 2kg= 2000g

c=?

ms= md + mapa

ms= 500 + 2000=2500 g sol.

c= 500 . 100 : 2500=20%

c.

md=80g

Vs=153 mL

ro= 1,3075 g/mL

c=?

ms= ro . Vs

ms= 1,3075 g/mL  . 153mL =200,0475 g

c= 80.100 : 200,0475=39,99%

d.

ms1=200g

c1=94%

ms2=400g

c2= 40%

cfinal

md1= c1.ms1 : 100

md1= 94 . 200 : 100= 188 g

md2= 40 . 400 : 100=160 g

mdfinal= 188 + 160=348

msf= 200 + 400=600g

cf= 348 .100 : 600=58%