Which is true about covalent compounds?
have a high melting point
conduct electricity when dissolved in water
have a low boiling point
are extremely hard

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

The volume of a single vanadium atom is 9.29×10-24 cm3. what is the volume of a vanadium atom in microliters?

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?