Identify the isotope being described. 1. used to determine damage in heart tissue and detection of tumors.

Q: A shipment contains 800 Curries of Iodine-125 (T1/2  =  60 days)  a) How much will be left in 11…

A: Initial activitiy is given to be equal to 800 Ci.

Q: Assay of (carbon - 11) ?

A: Carbon-11 is a radioactive isotope of carbon. It decay by the emission of proton and it's decay to…

Q: A 5.4-μg sample of 226RaCl2 has a radioactivity of 1.5x105 Bq. Calculate t1/2 of 226Ra

A: The number of Ra atoms is calculated as, The number of Ra atoms is .

Q: Stephanie is a radiation worker, as part of her job she spent 2 weeks fixing a valve in high level…

A: 3.3 Ci/cm = 3.3 x 109 Bq/cm 2.5 mSv/Bq x (3.3 x 109 Bq/cm) = 8.25 x 108 mSv 8.25 x 108 mSv = 8.25 Sv…

Q: The mass OF 1.00 of water is 18-09 true or Fal se ?

A: Molar mass of water = 18.015 gram

Q: Part A BCla

A:

Q: 128Ba+ ____  -->  128Cs         Alpha emission     Beta emission     Positron emission…

A: The atomic number of Ba is 56 and Cs is 55 Hence the reaction taking place is (assuming the unknown…

Q: What is the binding energy (in MeV per nucleon) for the ⁶₃Li nucleus? Provide an answer to two…

A:

Q: ralence point. Gi nt (in grams) of t 5738

A:

Q: How can we predict stable nuclei?

A: The way to predict stable nuclei has to be given.

Q: 1. - used as a tracer to diagnose pernicious anemia. - used in archeology, biological research, and…

A:

Q: A radioisotope produces an intensity of 8.75 x 10" becquerel (Bq) at a distance of 2.00 cm from the…

A: Given : Intensity at r1= 2cm , I1 =8.75x104 Bq Intensity at r2 = 36cm, I2 = ?

Q: 82 joes ß decay. Wh

A:

Q: How cardiac imaging is done using a radio isotope

A: Cardiac imaging is the imaging technique or non-invasive imaging of heart. This imaging can be done…

Q: a.)Cite 15 uses and 15 hazards of Carbon-14 radioactive isotope. b.) explain the uses and hazard of…

A: uses of Carbon-14 Radioactive isotopes- 1. The isotope also is used as a tracer in following the…

Q: For 31 Cl, indicate a) nimber of Protuns b) number of nevtns C) number of etectins d) Mass nimber

A: For  37Cl we have to find out ., 1. the number of protons 2. the number of neutrons 3. the number of…

Q: 19) What is the amount of starting material when 0.25-g remain and the number of half-lives is 3.72

A: The amount of starting material is expressed by the relation, A=A02n where A is the amount of…

Q: When a radioisotope is used as a tracer, it is used a. for therapeutical purposes b. to kill…

A: Given,  A radioisotope is used as a tracer. Trace element is the one whose concentration is very…

Q: A radioisotope produces an intensity of 8.75 x 10* becquerel (Bq) at a distance of 2.00 cm from the…

A: With the increase in distance the intensity decreases.

Q: The radioisotope 3516S will decay through

A: For the stablity of nucleus N/P ratio for lighter nuclei must be equal to 1. And unstable nuclei…

Q: Which of the following isotopes would be the best choice for use with PET?

A: Introduction: PET ( Pistron Emission Tomography ) is a nuclear medicine imaging method , frequently…

Q: - calculate the dose in mcg/kg/min.

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Which of the following is a positron? (A) B He

A: Interpretation: We have to tell which of the following is positron.

Q: How many grams of 32P are there in a 5 mCi source?

A: Specific Activitty = 6.022×1023M×t12p32=t12= 14.29 daysSA = 6.022×102314.29×24×3600×32SA= 2.85×105…

Q: What is the effective dose (in Sv) absorbed by a 75.0 kg worker?

A: Given: Nuclear plant absorbed 426 J of radiation primarily from γ radiation. To Calculate: Effective…

Q: How many curies are produced by 1.0 mol of 4"K (t1/2 = 1.25 × 10° yr)? How many becquerels? Enter…

A: Given: number of moles=1 mol t12 for K40=1.25×109 yr To Find: Activity in Curies and becquerel.…

Q: Question Help ▼ When radioactive substances decay, the amount remaining will form a geometric…

A: Given : The amount of isotope remaining is making a geometric sequence.

Q: sodium-24 is a radioisotope used to measure blood circulation time. Calculate the mass (in…

A: Original mass of Na-24 sample = 26.6 mg Half life = 4 hours Mass of sample after 1 day and 4 hours…

Q: What is a mass scan in MS?

A: A specific mass range can be scanned by using mass spectrometer.

Q: Which field (medicine, agriculture, industries) is the Radioactive Isotopes (Radioisotopes) most…

A: Radioactive isotopes, also called radioisotope or radioactive nuclide, is mostly used in medicine.…

Q: A substance has a half-live of 5 minutes.  We have 50 grams of substance.  If 60 minutes has passed,…

A: The solution is as follows :

Q: Which acts as storage of genetic information in cells? a. nucleic acids b. lipids c. proteins d.…

A: Nucleic acid contains of N containing bases such as Adenine, Guanine, Cytosine, Thymine and Uracil.…

Q: Beta and positron emission is polyenergetic  true or false

A: Nuclear chemistry can be defined as the branch of chemistry that deals with radioactivity .and…

Q: To treat a thyroid tumor, a patient must be given a 155-mCi dose of iodine-131, supplied in a vial…

A:

Q: When O-15 undergoes positron emission it changes into   O-14   F-15   N-15   O--15

A: Explanation to the correct answer is given below.

Q: Explain why 20Na is more likely to undergo positron emission than beta decay.

A: Given data, 20Na

Q: 1. The carbon from the heartwood of a giant sequoia tree gives 11 counts per minute per gram carbon…

A: The Initially or fresh is 15counts per min per g and at time t , it's 11counts per min per . With…

Q: Calculate the mass defect and binding energy for C13 nucleus?

A: The mass defect and binding energy of C13 nucleus can be calculated as

Q: why a physician would use an isotope with a shorter half- life to diagnose or treat patients

A: Radioactive elements are those which which emits radiations. In simpler words, an unstable nuclei…

Q: What is a positron?

A: An atom has three sub-atomic particles namely, protons, neutrons, and electrons. The atom's mass is…

Q: An 85 kg radiation worker accidently ingest 1.0 mg of Po211. Calculate Number of Po211 atoms…

A: This problem can be solved by knowing that 1 mole of substance contains 6.022×1023 particles.

Q: The way radioisotopes are useful in treating cancer is due to   being easy to detect   killing…

A: The radioisotopes are used to treat cancer by killing cancer cells or inhibits the growth of Cancer…

Q: Using isotope, can we trace back again our ancestors?

A:

Q: Which of the following is a positron? (A B C D) D He

A:

Q: What type of nuclei is used in PET scan instruments? A) Proton emitters B) Gamma ray emitters C)…

A: PET  scan is  generally used  in diagnosis of internal organ of the body.

Q: 18 1. Nuclear Transmutation: 0+;H→;n+_ [Product is used for positron emission tomography (PET)] 2.…

A: Few question based on nuclear chemistry, which are to be accomplished.