This is the type of question that I will need to learn how to do but am lost at how

14 6 (a) A student is provided with a freshly prepared sample of a radioactive material and thecount rate Ctrom the source is found to vary with time tas shown in Fig. 6.1(a). C CCo Co00/2 00/200/4 00/4O 0o 50 100 150 ”s o 50 100 150 ”sFig. 6.1(a) Fig. 6.1(b) A second similar sample of the radioactive material is then prepared and the studentrepeats the experiment, but with the sample at a higher temperature. The variation withtime of the count rate for the second sample is shown in Fig. 6.1 (b). State the evidence that is provided by these two experiments for (i) the random nature of radioactive decay, , .................................................................................................................................... ----------------------------------------------------------------------------------------------------------------------------------- (b) The radioactive source in (a) is an isotope of radon (2ggnn) that emits oc-radiation tobecome polonium (Po). (i) State the number of neutrons in one nucleus of radon-220. number = ............................................ [1] (ii) Write down a nuclear equation to represent the radioactive decay of a nucleus ofradon. ........................ [3] 9702/2/M/J03 ForExaminersUse