How many molecules of h20 are in 2.0 moles

Who is better, messi or cristiano, i need this for a chemistry class. asap

How are isotopes of the same chemical element alike? how are they different?

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.