How many bonds will each of these elements, H, O and N, form when they bond with themselves? (Use the octet rule to figure this out)

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

May someone me with these science questions

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table