Describe how to do an experiment to show that when you dissolve salt in water the salt is still there??? Heeelp please

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols

Can someone me with 6 to 10 plz this is for masteries test.