Salt seems to disappear when it is poured into water. use the terms mixture, solution, and dissolve to explain what happens

Tell me the iupac name of the following compounds:

How many grams of phosphorus are contained in 5.09 moles of phosphorus?

How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.