Phosphorus pentoxide finds use as

Phosphorus pentoxide is :

Phosphorus pentoxide cannot be used to dry:

Phosphorus pentoxide used in the preparation of N_(2)O_(5) from HNO_(3) acts as a

What is the product formed on dissolution of phosphorus pentoxide in water?

What happens when acetamide is heated with phosphorus pentoxide and then hydrolyzed?

Why cannot substances such as conc. H_2SO_4 , anhydrous calcium chloride and phosphorus pentoxide be used for drying ammonia gas?