Question

Problemele de jos va rog.Dau coroana.

Answer 1

CuCl2

1)

64:71

2)

1:2

3)

64g Cu........71g Cl...........135g CuCl2

x......................y...................100g CuCl2

x = 64*100/135 = 47,41% Cu

y = 100 - 47,41 = 52,59% Cl

4)

71g Cl.............135g CuCl2

x.......................10g CuCl2

x = 71*10/135 = 5,26g Cl

5)

64g Cu............135g CuCl2

6,4g Cu........................x

x = 6,4*135/64 = 13,5g CuCl2