Fill in the blanks. By looking at the forelimbs of several vertebrate(animals with backbone).we can see that they have bone structure even though the limbs have completely different .this tells scientists that these organisms all have a .

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.

Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol

How is the way a mixture is combined different from how a compound is combined?