6.) If 476 g of KBr are produced, how many moles of Potassium Sulfide (K2SO4) reacted? *
2 AlBr3 + 3 K2SO4 → 6 KBr + 1 Al2(SO4)3

As cooking food that has to go in the oven

Not a  mixture of two common elements that can be separated by physical means.

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.   

This is called a hybrid.