Question

Mg-MgSO4-Mg(NO3)2-MgCO3

Answer 1

Mg+H2SO4-->MgSO4+H2

MgSO4+2HNO3-->Mg(NO3)2+H2SO4

Mg(NO3)2+Na2CO3-->2NaNO3+MgCO3

Answer 2

This is a list of four different compounds, each consisting of magnesium (Mg) combined with a different anion or group of anions. These compounds are:

1. MgSO4, which is magnesium sulfate. This compound is commonly used in medicine as a laxative or as a treatment for magnesium deficiency.

2. Mg(NO3)2, which is magnesium nitrate. This compound is often used as a fertilizer or as a component of pyrotechnic mixtures.

3. MgCO3, which is magnesium carbonate. This compound is used in the production of cement and ceramics, and is also found in some antacids.

4. Mg, which is just pure magnesium by itself. This element is the eighth most abundant element in the Earth's crust and is commonly used in alloys and in the production of flares and fireworks.