Question

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Answer 1

Răspuns:

2

CO2 + H2O => H2CO3 reactie de combinare

2Al+ 3Cl2=>2 AlCl3 reactie de combinare

H2+ Cl2 => 2HCl reactie de combinare

K2O + H2O => 2KOH reactie de combinare

N2+3 H2=> 2NH3 reactie de combinare

3

2×23g 71g 2×58,5g

2Na + Cl2=> 2NaCl

69g xg yg

MNa=23g/mol

MCl2=2×35,5=71g/mol

MNaCl=23+35,5=58,5g/mol

x=69×71/2×23=calculează

y=69×2×58,5/2×23=calculează