Hall-lile ol iror is? (A=55)
Correct answer: A. 44.5 days
- A. 44.5 days
- B. 1.3 million years
- C. 3.8 days
- D. 2.5 billion years
Explanation
The isotope of tron with mass number 59 (59 F'e) has a half-life of approximately 44.5 days. This means it takes 44.5 days for half of the radioactive 59Fe atoms in a sample to decay.
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Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
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