While experimenting with acid-base reactions, a student mixes lithium hydroxide (lioh) and hydrofluoric acid (hf) together. the products of the reaction are and

 The   product of the  reaction  between lithium hydroxide and  hydrofluoric acid is

lithium fluoride (LiF) and water(H₂O)

Explanation

Base  react  with acid  to form  salt  and water.

Lithium hydroxide( a base)  react with  hydrofluoric acid ( an acid) to produce lithium fluoride( salt)  and water according  to reaction below

 LiOH +HF → LiF  +H₂O

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.

B) movement of materials into and out of the cell