Which one of the following is a balanced equation? a. na (s) + mgf2 → 2naf (s) + mg (s) b. 2na (s) + mgf2 → 2naf (s) + mg (s) c. na (s) + o2 (g) → na2o d. zn (s) + hcl (g) → zncl2 (s) + h2 (g)

What does a particular point on a line of a phase diagram represent? o a. the maximum temperature a substance can exist at without bonds breaking b. the pressure created by the kinetic energy of molecules at a particular temperature c. the melting point or boiling point of a substance at a specific pressure d. the conditions in which temperature and pressure have equal effects on a substance

Both josef loschmidt and amedeo avogadro contributed to our understanding of basic molecular numbers, sizes, and reaction ratios. neither scientist discovered “avogadro’s number” in the form we use it today (6.02 x 10 23). still, there’s a controversy over the name. research the contributions from these two scientists and read about how avogadro’s number got its name. briefly state what you think this number should be called, providing key details of each scientist’s contributions to this concept and a solid rationale for your case in naming the number.

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?