Pls answer this it's due today

That's pretty easy,if you have a grasp of Elements, Compounds and their Symbols ans Molecular formula.

So, Let's get started!

Our reactions are as follows:

Think of a compound that has both Sodium and Chlorine and is very common.

Common salt — Sodium chloride!

Yeah, that's it! It has both Sodium and Chlorine in it's molecular formula. (NaCl)

Now, we have to, somehow, get Magnesium oxide using Oxygen. The best way is: by reacting Magnesium with Oxygen.

Now, we have to get two reactants that react to form Iron Sulfide.

FeS contains only two elements in its formula and that are: Iron(Fe) and Sulfur(S).

So, the best way would be to react Iron(Fe) and Sulfur(S) and get Iron Sulfide (FeS)

You must know that water is H2O, that is, a compound of Hydrogen and Oxygen, the easiest way to get H2O as your product would be : by reacting Oxygen and Hydrogen.

i dont know

explanation:

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: