Masa moleculara a HCL =1+35.5=36.5 g/mol
36.5...100%
1...x
afli x cu regula de trei simpla x=2.73% H
36.5...100%
35.5...y
afli x din regula de trei simpla y=97, 26%Cl
raspuns final:2, 73%H si 97, 26%Cl
masa moleculara a H2SO4=2+32+64=98g/mol
98...100%
2...z z=2, 04% H
98...100%
32...e e=32, 65%S
98...100%
64...a a=65.3 % O
funda?
kristina13 întreabă: