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va rog mult dau coroana

Va Rog Mult Dau Coroana class=

Răspuns :

Răspuns:

Ca(OH)2+2HCl =CaCl2 +2H2O

40=mdx100/500

md=40x500/100=200gHCl pur

2x36,6gHCl.....................111gCaCl2

 2oogHCL.....................X

X=200x111/73=304,1gCaCl2

2x36,5gHCl.......................2x18gH2O

200g HCl................................Y

Y=200x36/73=98,6gH2O

Explicație: