write a formula equation for the following equation:Ammonia reactsa with hydrogen chloride to form ammonium chloride.

NH4 + HCl = NH4Cl

something like that

How about
NH3 + HCl ==> NH4Cl

(NH4^+ is the ammonium ion. NH3 is ammonia).

To formulate the equation for the reaction between ammonia and hydrogen chloride to form ammonium chloride, you need to understand the chemical symbols for each compound involved. The chemical symbol for ammonia is NH₃, and the chemical symbol for hydrogen chloride is HCl. Ammonium chloride is represented by the chemical formula NH₄Cl.

The overall reaction equation can be written as follows:

NH₃ + HCl → NH₄Cl

In this equation, NH₃ reacts with HCl to produce NH₄Cl. The arrow → indicates the direction of the reaction, showing the conversion of reactants to products.

Please note that the subscript 4 in NH₄ represents the presence of four hydrogen atoms bonded to one nitrogen atom, forming the ammonium ion (NH₄⁺).