lnforrnation '3." Fiag question Question I h ot yet a rtswe re cl Marked out of 1.00 1'." Flag question Question 2 h ot y et a nswere d Marked out of 4.00 if Flag question This project has two sections. First you will calculate the mass ofa helium-5 atom based on the following info: lHUJ-I Helium5 decays into Helium4 and a neutron: gHe l He + [1511 The masses of two of these particles are given in the following table. Isotope Mass {10'27 kg) Notation :He 6.64884 Neutron 1n 1.67493 The decay of helium5 to helium-4 and a neutron forms an isolated system. In this system, the mass defect is observed as an increase in kinetic energy. A helium5 nucleus, at rest, decays. Both the neutron and the helium4 nucleus move away from the location of the decay. The helium4 nucleus has a momentum of 1.90306 x 1020 N-s and a kinetic energy of 2.72350 x 10'14 J. Enter the calculated mass of the Helium-5 atom below. Round your answer to 6 signicant gures, using units of "kilograms". You can enter scientic notation in the answer box. Examples are shown below: lfyour answer is 4561934 you would answer: 4.56193 x10\"6 or 4.56193E6 lfyour answer is 00000000119780 you would answer: 1.19700 x1008 or 1.1978008 Note that both examples also show rounding to 6 signicant figures. Answer: 1 Type or upload all the work you did as you calculated the mass of Helium-5. Show all steps, formulas, and any explanations to make your thinking as clear as possible. You will not receive part marks for this unless you show all your work. _ aaaaaaa w B r e: a: El art- BEE lnlormann 'l' Flag question Radioactive isotopes {radioisotopes} are extremely important for some medical tests and procedures. A common radioisotope used for medical imaging is technetium-99. Technetium-99 is used because it releases 140 keV gamma rays that are easily detected outside of the body and doesn't damage surrounding tissue. It has a short halflife and the human body easily excretes its daughter products. The short half-life that makes it safe also means that the hospital needs a constant supply. To solve this problem, scientists developed a technetium-99 generator from molybdenum-99, a by-product of spent nuclear reactor fuel. The molybdenum-99 needs replacing weekly instead of daily shipments of technetium-99. The generator starts with molybdenum99, which decays into technetium99r which can be separated by a relatively easy chemical process. As a learning exercise; a medical student is asked to monitor the decay of a molybdenum99 sample of 100 9 over a week. The student measures the folEowing values. "#55: Remaining (9.) 20 81 Tithe (hour's) 30 ?3 _ 5U 59 60 53 70 48 80 43 90 39 35 31 28 26 23 21 19 \fQuestion 5 Not yet answered Mazed out of 1.00 'i" Hag question What is the decay equation for molybdenum99 into technetium99? Motybdenum 99 decays to technetium 99 by beta decay. Paragraph 7 _ B ' 99:": . 0'15\"\" 6 The decay of technetium99 releases a 140 ke'u' gamma ray. How much mass is changed into energy to create the Mt Yet gamma ray? answered Marked out of 'kg are changed into energy to create the gamma ray, 1 .DD V, Flag queshion Answer rounded to 3 significant figures using scientic notation is necessary. Question 7 Type or upload any written work showing how you caicuiateo the mass from the previous question. not yet answered E Paragraph V B if SE lE E ('3' E\" E Marked out of 1.00 't' Flag