2. MgCO3

3. KCl

2magnesium carbonate

3.potassium chloride

2. Magnesium carbon trioxide

3.Potassium calcium

2.magnesium carbon trioxide

3.potasium chlorine

MgCO3:mahnesium carbonate

KCI:Potassium chloride

2 c,o

3 cabon

4 co2

h,o

hydrogen oxide

h2o3

đơn chất

O

dioxide

O2

H, C

Hydrogen carbonate

hợp chất:c,d,e,f

Hợp chất: C,D,E,F

2. Magnesium carbon trioxide

3. Kali calcium

Kali calcium

1. carbon dioxide CO₂ O = C = O

2 carbon monoxide CO C ≡ O

3 Hydrogen H₂ H – H