Question

Va rog,am nevoie urgent!!
DAU COROANA
​

Answer 1

Răspuns:

m,otel=1000g   cu 8,5%Fe  si 1,5%C

m,fonta= 2500g   cu  95%Fe  si 5% C

calculez masa de C din otel si fonta

100g otel......1,5gC

1000g...........x1= 15gC

100g fonta.......5gC

2500g...............x2=125gC       TOTAL: x1+x2=140gC

calculez masa de fier din otel si fonta

100g otel.........8,5gFe

1000g..............y1=85g Fe

100g fonta........95gFe

2500g,,,,,,,,,,,,,,,y2=2375gFe       TOTAL : y1+y2=2460gFe  

total amestec  140gC+2460gFe=2600g

2600g amestec.......140gC.......2460gFe

100..................................x................y

x=5,4%C

Y= 94,6%Fe

ție: