How much will it cost to purchase materials for a fence if feet are needed and the fencing costs /yard? Set up the problem below and calculate the cost. Place your conversion factors in order such that "feet" cancels first.

It is a body of knowledge gained  using  inquiry and experimentation 

According to arrhenius theory of acid and bases, an acid is a proton donor, while base donates hydroxyl ions. further, acid and base reacts to form salt and water.consider following example.hcl    +      h2o          →      cl-          +      h3o+here, hcl has donated a proton, hence it is an acid.now consider following reactionhcl      +      naoh            ↔      nacl      +        h2oin this reaction, hcl donates proton, hence it is acid. on other hand, naoh donates hydroxyl ion (i.e. hence it is a base.