Question

Mg-MgCl2-Mg(No3)2-Mg(oh)2-MgO-MgSo4-MgCl2

Answer 1

$Mg+2HCl=MgCl_2+H_2\uparrow\\ MgCl_2+2AgNO_3=Mg(NO_3)_2+2AgCl\downarrow\\ Mg(NO_3)_2+2NaOH=Mg(OH)_2\downarrow+2NaNO_3\\ Mg(OH)_2=t=MgO+H_2O\\ MgO+H_2SO_4=MgSO_4+H_2O\\ MgSO_4+BaCl_2=MgCl_2+BaSO_4\downarrow$

Answer 2

It seems like you have listed several chemical compounds involving the element magnesium (Mg). Let's go through each of them:

1. Mg: This is the chemical symbol for the element magnesium, which is an alkaline earth metal with atomic number 12.

2. MgCl2: This is magnesium chloride, a compound made up of one magnesium atom and two chlorine atoms. It is a white, crystalline solid and is commonly used in various industrial and chemical processes.

3. Mg(NO3)2: This is magnesium nitrate, a compound composed of one magnesium atom and two nitrate ions (NO3-). It is often used as a fertilizer in agriculture and as a component in some pyrotechnics.

4. Mg(OH)2: This is magnesium hydroxide, also known as milk of magnesia. It consists of one magnesium atom and two hydroxide ions (OH-). It is commonly used as an antacid to neutralize excess stomach acid and as a laxative.

5. MgO: This is magnesium oxide, a compound formed by one magnesium atom and one oxygen atom. It is a white solid with high melting and boiling points and is used in various applications, including as a refractory material and in the production of magnesium metal.

6. MgSO4: This is magnesium sulfate, a compound that contains one magnesium atom, one sulfur atom, and four oxygen atoms. It exists in several forms, including anhydrous (MgSO4) and hydrated (MgSO4·xH2O). It is used in medicine, as a drying agent, and in agriculture.

7. MgCl2 (again): You've already listed this compound as the second item. It is magnesium chloride, as explained above.

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