Question

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Answer 1

Răspuns:

5.

2Ba + O2 => 2BaO

BaO + H2O => Ba(OH)2

Ba(OH)2 + 2HCl => BaCl2 + 2H2O

BaCl2 + 2HNO3 => Ba(NO3)2 + 2HCl

6.

3×56g.......78g.........3×74,5g

AlCl3 + 3KOH → Al(OH)3 + 3KCl

11,2g.........xg............yg

MAl(OH)3=27+3×16+3×1==78g/mol

MKOH =39+16+1=56g/mol

MKCl=39+35,5=74,5g/mol

x=11,2+78/3×56=calculează

y=11,2×3×74,5/3×56=calculează