Question

Mg-Mg O-Mg Cl2-Mg CO3-Mg3(PO4)2

Answer 1

2Mg+O2=2MgO
MgO+2HCl=MgCl2+H2O
MgCl2+H2CO3=2HCl+MaCO3
3MgCO3+2H3PO4=Mg3(PO4)2+3H2O+3CO2

Answer 2

It seems like you've listed various chemical compounds involving magnesium (Mg). Here's a breakdown of the compounds you've mentioned:

1. Mg-Mg: This notation suggests a diatomic magnesium molecule, which is highly unusual and not a stable form of magnesium. Normally, magnesium exists as Mg²⁺ ions in compounds.

2. MgO: Magnesium oxide is a compound consisting of magnesium (Mg) and oxygen (O) atoms. It's an inorganic compound used in various applications, including as a refractory material and as a drying agent for hands, feet, and other skin.

3. MgCl2: Magnesium chloride is a chemical compound consisting of magnesium and chlorine (Cl) atoms. It is commonly used as a de-icing agent on roads and sidewalks in winter and has various industrial applications.

4. MgCO3: Magnesium carbonate is a white solid that occurs in nature as a mineral. It is used as a drying agent for hands, gymnastics, rock climbing, and weight lifting.

5. Mg3(PO4)2: Magnesium phosphate is a general term for salts of magnesium and phosphate. The formula Mg3(PO4)2 represents magnesium phosphate, where three magnesium (Mg²⁺) ions combine with two phosphate (PO4³⁻) ions.

If you have any specific questions about these compounds or if you need more detailed information, feel free to ask!