Which information is necessary to determine the molarity of a solution if the chemical formula of the solute is known?
a. the mass of solute dissolved and the volume of solvent added
b. the molar mass of both the solute and the solvent used
c. the mass of solute dissolved and the final volume of the solution
d. only the volume of solvent used
e. only the mass of solute dissolved

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

0.2348 grams of pbcl2 used to form 44.0 ml of solution.

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.