Assume that the test tube shown started out having 10.00
g of mercury(II) oxide. After
heating the test tube briefly, you
find 1.35 g mercury(II) oxide left
and 8.00 g of liquid mercury.
How much oxygen gas was
produced by the chemical
reaction? Show your work.

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.