10. [A4] Actinium-225 is a radioactive metallic element. A container that initially had 400 grams of Actinium-225 has 40 grams remaining after 31 days. Determine the half-life of Actinium-225. Keep answers as exactvalues using common logarithms. 11. [A2] Orange juice has a hydrogen ion concentration of 0.001 … Show more… Show more Math MATH MHF4UA Share QuestionEmailCopy link Comments (0)




