Write the nuclear equation for the positron decay of C-11.
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- A 10.00 mg sample of technetium-93 (92.91024898 u) is used to heat 125.4 g of water from 23.4 degree C to 87.4 degree C. How many minutes will be required to heat the water if all of the energy generated from the decay is used to heat the water?Write balanced nuclear equations for the following:(a) β⁻ decay of sodium-26(b) β⁻ decay of francium-223(c) Alpha decay of ²¹²₈₃BiAssume that you list the following types of electromagnetic radiation in order of increasing wavelength: () the gamma rays produced by a radioactive nuclide used in medical imaging: (ii) radiation from an FM radio station at 93.1 MHz on the dial; (iii) a radio signal from an AM radio station at 680 kHz on the dial; (iv) the yellow light from sodium vapor streetlights; (v) the red light of a light-emitting diode. Which one would be the second? Lütfen birini seçin: O a 680 kHz AM radio waves O b. the red light O c the yellow light O d. 93.1 MHz FM radio waves O e the gamma rays
- Po-210 is an alpha emitter with a half-life of 138 days. Howmany grams of Po-210 remain after 552 days if the sampleinitially contained 5.80 g of Po-210?Approximately what amount (in Sv) of short-term exposure to radiation produces noticeable effects in humans?The image shows a whole body bone scan using MDP (mono-diphosphonate) labelled with technetium-99m. Patient is injected with 600 MBq of Tc-99 MDP Technetium-99m is a pure gamma emitter, with physical half-life of 6 hours. a) Use the data to explain why technetium 99-m is a suitable radionuclide (AC 3.1) ● b) What other information would you need to assess the suitability of Technetium-99m as a radioactive tracer. (AC 3.1) Prompt questions
- 238. 234. 14) Uranium-238 ( 92") decays to form thorium-234 ( 90 h) with a half-life of 4.5 x 10° years. How many years will it take for 75% of the uranium-238 to decay? а) 9.0х 10 years с) 9.0х10° years b) 4.5 x 10° years d). 3.8 х 10° усаrsExplain how the type of decay, the half life and the chemical properties make the following radionuclides suitable for the given applications: A single gram of polonium will reach a temperature of 500°C making it useful as a source of heat for space equipment (α emitter, half lives of polonium isotopes range from less than a second to 200 years).If there is 10 μmol of the radioactive isotope 32P (half-life 14 days) at t = 0, how much 32P will remain at (a) 7 days, (b) 14 days, (c) 21 days, and (d) 70 days?