Question

Mg →MgO →MgCl2 →Mg(NO3) 2 ​

Answer 1

2Mg + O2 → 2MgO

MgO + 2HCl → MgCl2 + H2O

MgCl2 + 2NaNO3 → Mg(NO3)2 + 2NaCl

Answer 2

It seems like you've listed a series of chemical reactions involving magnesium (Mg) and various compounds. Let's break down the reactions step by step:

1. Mg → MgO: This represents the reaction between magnesium (Mg) and oxygen (O2) to form magnesium oxide (MgO). This is an example of a combustion reaction where magnesium reacts with oxygen in the air to produce magnesium oxide. The balanced chemical equation for this reaction is:

2 Mg + O2 → 2 MgO

2. MgO → MgCl2: This suggests a reaction between magnesium oxide (MgO) and hydrochloric acid (HCl) to form magnesium chloride (MgCl2) and water (H2O). The balanced chemical equation for this reaction is:

MgO + 2 HCl → MgCl2 + H2O

3. MgCl2 → Mg(NO3)2: This seems to be a reaction between magnesium chloride (MgCl2) and nitric acid (HNO3) to form magnesium nitrate (Mg(NO3)2) and hydrochloric acid (HCl). The balanced chemical equation for this reaction is:

MgCl2 + 2 HNO3 → Mg(NO3)2 + 2 HCl

Please note that chemical reactions occur according to the Law of Conservation of Mass, meaning that the number and type of atoms on both sides of the reaction equation must be equal.

If you have specific questions about any of these reactions or their applications, feel free to ask!