Which pair of atoms would form a covalent bond ?

What mass of carbon dioxide is produced from the complete combustion of 4.50×10−3 g of methane?

What is the temperature of one mole of helium gas at stp?

16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.