List the three requirements for a correctly written chemical equation.2. Give one example of a word equation, one example of a formula equation, and one example of a chemical equation.3. Write formulas for each of the following compounds. a. potassium hydroxide b. calcium nitrate

Requirements for a correctly written chemical equation are reactants and products, their formula and valency

Explanation:

Formula of the given compound are -

1 - Potassium Hydroxide -

2 - Calcium Nitrate -

The requirements for a correctly written chemical equation are -

Example of word equation, formula equation, and chemical equation is as follows -

Aluminium + iron9(III)oxide ⇒ aluminium oxide + iron (word equation)

 +    ⇒    + (formula equation)              

+    ⇒     + (chemical equation)

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  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-