7. If the following radioisotopes were to undergo Beta decay what would be the result?

a. 149/64 Gd

b. 233/90 Th

8. A 5.0mL sample of Gold-199 contains 47.00 mCi. How many becquerels are present? (Hint: Convert to Curies first)

9. Radioactive Phosphorous-32 has a half-life of 14.3 days. If a dose with an activity of 10Ci is given to a patient, how much radioactivity in Ci will remain after 57.2 days?

10. Write the Molecular formula of the following Compounds and write the charge of each individual element above the elements symbol in the molecular formula: A. Curium (II) Oxide B. Protactinium (III) Fluoride C. Ytterbium (II) Nitride (Challenging!)

11. If a food contains 2.15 X 104 J how many nutritional Calories does it contain?

12. Calculate the following with an answer in units of g/mL using significant figures: a. Calculate the density in g/mL of 0.112 L of solution weighing 2.6 grams. b. Calculate the density in g/mL of 301 mL of solution weighing 28.6 kg.

13. Balance the following chemical equations: A. ____ SH2 + ____ O2 ____ SO2 + ____ H2O B. ____Mt + ____H2O ____Mt2O3 + ____H2