How many different elements are in NaHCO3?

What’s the percent by mass of carbon in c10h14n2

Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.

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.