What are three physical properties often analyzed to identify covalent compounds?

Covalent compounds are compounds in which nonmetal atoms are bond and share electrons. 
In order to identify if a compound is covalent it must satisfy the following physical properties:
1. Covalent compounds generally have much lower melting and boiling points than ionic compounds.
2. Covalent compounds have soft or brittle solid forms.
3. Covalent compounds have poor electrical and thermal conductivity.

1. and 2. question: in which equation? or i don't understand you, 3. a), 4. c), 5. c), 6. b), 7. d), 8. d) if small number is underlined(behind symbol) , b) if big number is underlined(in front of symbol)9. what is underlined there? 10. c)

Since there is the same amount of agn03 in both silver chloride and silver nitrate they produce the same amount of moles. therefore silver chloride produces the same amount of silver nitrate, so your answer is 15.0 moles of silver nitrate. i hope this !