Răspuns:
c= mdx100/ms
36,5/100= md/400----->md= 4x36,5g
n(niu)= m/M; n= 4x36,5g/36,5g/mol= 4mol
2mol 6mol 3mol
2KClo3 + 6HCl----> 3Cl2 + 2KCl + 6H2O
x................4mol.............y
x= 4/.3molKClO3
m=4/3molxM,KClO3,g/mol=..............................CALCULEAZA
y= 1/2mol Cl2
V= 0,5molx22,4l/mol=11.2
Explicație: