How many pairs of electrons are shared between the nitrogen atoms in a molecule of n2?

What is the mass of 0.750 mole of aluminum oxide, al2o3?

Which best describes the activation energy of a chemical reaction? a. the combined energy of all the reactants b. the amount of energy required for a reaction to occur c. the difference in energy between products and reactants d. the potential energy stored in the bonds of reactants and products

Deferentiate volatile and non volatile acid