Calculate The Percent Of A Strontium Sample Left After 100 Years A Ne B Xe C Ar

Calculate the percent of a strontium sample left after 100 years. A) Ne B) Xe C) Ar D) Rn E) Kr 2. The half-life of strontium-90 is 28.1 years. __________________________ Date: _____________ 1. Which of the following noble gases is least likely to react with fluorine? A) Ne B) Xe C) Ar D) Rn E) Kr 2. The half-life of strontium-90 is 28.1 years. A) 8.5% B) 82% C) 76% D) 63% E) 0.34% 3. Which of the following is most likely to undergo Decay? A) 232Th B) 24Na C) 3H D) 14C E) 47K 4. Which of the following is a basic oxide? A) SO2(g) B) SiO 2(s) C) CO2(g) D) MgO(s) E) CO(g) 5. When 131I emits a Particle, what nuclide is produced?

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