Chapter 7, Problem 17P

(a) What is the physical significance of energy of activation ? Explain with diagram.(b) In general, it is observed that the rate of a chemical reaction doubles with every 10 degree rise in temperature. If the generalization holds good for the reaction in the temperature range of 295 K to 305 K, what would be the value of activation energy for this reaction ?[R = 8.314 J mol-1 K-1]

Application of Differential Calculus A zircon sample contains 4000 atoms of the radioactive element 235U given that 235U has a half-life of 700 million years, how long would it take to decay to 125 atoms?

Initially, there is 50 mg of a certain radioactive material present and after two hours, it is observed that the material has lost 10% of its original  mass.  Find: a) the mass of the material after 4 hours b) the time at which the mass has decayed to one-half of its initial mass (half-life of the material)