A clinical technician finds that the activity of a sodium-24 sample is 1,024 cpm. What will be the activity of the sample (in cpm) 90 h later if the half-life of sodium-24 is 15 h?

Q: One of the radioactive nuclides formed in nuclear power plants is hydrogen-3, called tritium, which…

A: According to theroy of Radioactivitythe decay rate of a nuclei which has initially N0 nuclei  at any…

Q: In quantitative and qualitative research samples usually are random in the first, while purposeful…

A: Answer In quantitative research the sample used are in randomly. It is also called probability…

Q: What is the half-life, t½, (in hr) when the concentration was 100 mg/L?

A: The concentration is decreasing at rate of 10mg/L/hr .

Q: When a nucleus of emits an alpha particle, what are the atomic number and the atomic mass of the…

A: In alpha decay, an unstable nucleus will emit an alpha particle, which is a helium nucleus composed…

Q: How many alpha particles are emitted per second from 1 microgram of radium?

A: we know that,  1C= Activity of 1 g of Radium=3.7×1010 days

Q: hromium-51 is used in imaging red blood cells and has an effective half-life of 27 days.   If a dose…

A: Given: The half-life time of the red blood cell is 27 days. The initial activity is 24 μCi. The…

Q: Graphs that show the relationship between radiation received and the organism's response are called:…

A: A graph shows the relation ship between radiation received and the organisms response are known as…

Q: A particular isotope has a half-life of 1 minute. If you start with 1 gram of this isotope, how much…

A: In the given question, We have to determine the remaining quantity of the isotope after 10 minute.

Q: Cobalt-60 has a half-life of approximately 5 years. If 53g of the material was stored for 20 yers,…

A: mi=m0×2nmi: initial mass=53 kgm0=remaining mass n= number of periods

Q: A Geiger counter registers a count rate of 7,200 counts per minute from a sample of a radioisotope.…

A: Given: A Geiger counter registers a count rate of 7,200 counts per minute from a sample of a…

Q: 4. Cobalt-60 has a half-life of approximately 5 years. If 53 g of the material was stored for 20…

A:

Q: A Geiger counter registers a count rate of 4,800 counts per minute from a sample of a radioisotope.…

A: Given data:  Initial count rate (N0) = 4,800 counts per minute Time (t) = 10 minutes Remaining count…

Q: A 85.0-kg person is exposed to 389 rad of radiation. How many joules did this person absorb?

A: Given, Exposed radiation= 389 rad 1J/kg = 100 rad Mass (M)=85 kg Total energy absorbed (T.E)=? We…

Q: A radioactive substance is found to register 5000 counts per second on a Geiger counter.…

A:

Q: When gamma is 1.88, what is beta

A:

Q: What is the dose in mSv for 1.5 mGy of α exposure?

A: The energy radiation for α exposer is 20RBE,

Q: A pound of coffee beans yields 50 cups of coffee (4cups = 1qt). How many mililiters of coffee can be…

A: Given: The number of cups are n=50 cups. The quantity is 4 cups =1 qt. The mass of coffee bean is…

Q: Iodine-131 has a half-life of 8 hours. If a solution containing 5 grams of iodine-131 is injected…

A:

Q: The radioactive element 2760Co  has a half life of ______ years. If you had a sample of 17 g, about…

A: Given: The mass of sample (m) = 17 g. The half-life of cobalt (T1/2) = 5.27 years. The life of…

Q: If you purchased 3.61 Mu Ci of sulfur-35, how many disintegrations per second does the sample…

A: Given: Initial amount of sulfur-35 = 3.61 x 10-6 Curieand 1 Curie = 3.7 x 1010 Bq1 Bq = 1 decay/s

Q: If you know that the natural element samarium (its mass number 146) contains the radioactive isotope…

A:

Q: A beam of gamma rays passes through 4x10-3 kg of air and produces 1.7x1012 ions. What is the…

A: we have  mass M=4 x 10-3kg charge=1.7x1012x1.6x 10-19C=2.72x10-7C

Q: If 60% of U.S. petroleum use goes for transportation, and 1% of this goes for buses, how much oil…

A: The amount of petroleum used in US is 60%, and x2 be the amount of petroleum used in buses 1%.The…

Q: If a sample emits 2000 counts per second when the detector is 10 meters from the sample, how many…

A:

Q: If 5g of iodine is in 250mL of iodine tincture, calculate the percentage(%w/v) of iodine in the…

A: Mass of iodine "m"= 5g  iodine in iodine tincture  "V"= 250ml

Q: The efficiency of a nuclear power plant is 35.4.0%. If 243.05.0 kW of power are produced by the…

A: The efficiency of a nuclear power plant is 35.4 %

Q: number of alpha-decays of Q in the first one hour is;

A: Given: Determine number of alpha decays of Q in the first one hour ?Where,   A heavy nucleous Q of…

Q: f the half-life of cesium-137 is 30 years, approximately how much time will be required to reduce a…

A:

Q: The half-life of Uranium-237 is 5.83 x 105 If you have a sample with 5.89 x 1024 atoms in it, how…

A:

Q: How many atoms of carbon-14 are there in Ig of carbon-12 in living organism?

A: Since there are 6.022×1023 carbon atoms in 12 grams of carbon. The 12 gram carbon atom contains,…

Q: The half-life of a certain chemical in the human body for a healthy adult is approximately 3h. What…

A:

Q: The half life of 85Kr is 11 years. What is the mass of one millicurie of 85Kr? O 9.2 microgram O 30…

A: Given  Half life = 11year  T½= 11*365*24*60*60 sec =3.48*10⁸ sec I millicurie = 3.7*10⁷ /s  Lambda=…

Q: The recommended adult dose of Elixophillin, a drug used to treat asthma, is 6mg/kg of body mass.…

A: lb = 0.454 kg

Q: If a sample emits 2000 counts per second when the detector is 1 meter from the sample, how many…

A:

Q: The Neutron number N is the number of neutrons in the.

A: The neutron number is the number of the neutrons in the Nuclide or Nucleus.

Q: If the half life of an element is 32.2 years, how many years it take for a sample to decay to the…

A:

Q: A radioactive nuclide has a half-life of 10 seconds. Beginning with 256 grams of the material, how…

A: Given: Half life period t1/2 = 10 sec Initial concentration N0 = 256 g Time = 1 min = 60 sec = 6…

Q: A GM counter has dead time of 250 s. It records 20.000 counts per minute. What is the actual count…

A: SOlution: Given that dead time T = 250 micro s = 250x10-6 s measured counting rate n = 20.000 counts…

Q: Iodine-131, a beta emitter, has a half-life of 8 days. A 7-gram sample of initially pure iodine-131…

A: Half life = 8 days initial mass = 7 grams 1) After 1 half life , that is after 8 days mass left =…

Q: Soon after taking an aspirin, a patient has absorbed 300 milligrams of the drug. If the amount of…

A: Given value--- initial amount of drug = 300 mg . half being removed every two hour . We have to…

Q: A Geiger counter registers a count rate of 5,600 counts per minute from a sample of a radioisotope.…

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

Q: A silver coin has a mass of 17.75 g. If the atomic mass of silver is 107.868 u, how many silver…

A: mass = 17.75 g Atomic mass of silver = 107.868 u Number of moles of silver present in the coin =…

Q: If the element Europium is 276 grams then how many atoms would it have?

A: Natoms=NAvamMmolar

Q: What is the difference between fast scan and slow scan in CT?

A: Computed tomography, also known as 'CT scan' is used to examine the structures inside human body. A…

Q: The efficiency of a nuclear power plant is 36.1.0 %. If 280.16.0 kW of power are produced by the…

A:

Nuclear Reactions

Nuclear reactions are processes in which the fundamental characteristics of a nucleus changes. They change into a completely different nucleus. These processes occur naturally in an unstable nucleus. Bombarding an energetic particle can induce nuclear reactions.  In this article, both the naturally occurring nuclear reactions are termed as radioactive decay and the induced nuclear reactions are further categorized as nuclear fission and nuclear fusion.