Question

urgeeeeennnntttt vaaaa rooogggg daaauuuu coroanaaa ​

Answer 1

Răspuns:

A,Mg=24g/mol

M,HCl= 36,5g/mol

M,MgCl2=95g/mol

24g........2x36,5g.........95g       ..1mol

Mg    +     2HCl-----> MgCl2 + H2

400g............x..................y.............z

x-=m=1216,7gHCl---> m,dizolvat

y=m=1583,3gMgCl2

z=n(niu)=16,67molH2

a)  c=mdx100/ms--> ms= mdx100/c=1216,7x100/25g=4866,8g

b)vezi y

c) vezi z

Explicație: