A 0.2-g sample of 3%Kr gas, which decays into stable Rb, is accidentally broken and escapes inside a sealed warehouse measuring 40 x 30 x 20 m. What is the specific activity of the air inside?
Q: Explain as to why or why not the formula for total mass of a nucleus ???? given below in term of…
A: Nucleus are made up of protons and neutrons. A proton carries a positive charge equal in magnitude…
Q: 137 If the specific activity of a 35 Cs source is initially 5x1016 Bq/kg, what is the specific…
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Q: Sihle, an archaeologist from UWC finds an ancient wooden axe handle at an excavation site at…
A: Write the expression of decay rate. N=N0e-tt1/2
Q: Iodine-120 has a half life of 1.35 hours. If you start off with a sample which has an activity of…
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Q: In 1991, German tourists discovered the well-preserved remains of a man, now called “Ötzi the…
A: When scientists date a sample it is essential that the isotope which is used to date the sample…
Q: P5 A reindeer owner finds a 5-year-old reindeer roast in his freezer. When the steak was placed in…
A:
Q: A 5,560 Ci 60 Co source used for cancer therapy is considered too weak to be useful when its…
A: Given, The activity of C60o used for cancer therapy = 5,560 Ci = R0 The reduced activity of C60o…
Q: A radioactive sample has an initial activity of 6.55 x 10°Bq (1Bq is one disintegration per second).…
A: Given, initial activity N0 = 6.55 x 109 Bq After t=4 hours, activity N = 1.02 x 108 Bq Half life…
Q: A sample has a ¹4C activity of 0.0052 Bq per gram of carbon. (a) Find the age of the sample,…
A: The amount of carbon-14 in a living thing is constant. As a result of radioactive decays, carbon-14…
Q: 10.10. A sample of wood from an Egyptian mummy case has a specific activity of 9.41 d/min-g. How old…
A:
Q: 1mg of (210) po decays to have a half-life of 138.3 days for a period of one year. What is the…
A: Given Initial amount, M=1mg=10-3g Half-life, T1/2=138.3 days=1.2×107s Time period, t=1 yr= 3.15×107s…
Q: A living specimen in equilibrium with the atmosphere contains one atom of 14C (half-life = 5730 yr)…
A: No. of atoms of any sample remaining after a time t is given as: N(t)=N0e-tλ The solution of this…
Q: (a) Determine the product of the reaction Li + *He → ? + n. → Help chemPad |Xu|X| Greek (b) What is…
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Q: radiation lab orders 64 Ci of P-32. After 42.9 days the activity of the sample is 8.0 Ci. What is…
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Q: Samarium-153, a radioactive isotope with a half-life of approximately 48 hours, is used to treat…
A: Given, Half life, T1/2=48hours=2 days
Q: Radioactive tracers are used to study ion transport across cell membranes. The beta-minus emitting…
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Q: Enter your result in MeV to 2 decimal places
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Q: CSDA range Determine the expected range of 2 MeV beta radiation in polyethylene, Aluminium and air.…
A: Collision stopping power is the average rate of energy loss per unit path length caused by Coulomb…
Q: The relationship between the half-life time and the rate constant of a zero order reaction is given…
A: Here, we need to derive the relationship between the half life time and the rate constant of a zero…
Q: What is the activity in Ci of a 2.6 mg sample of 3H? VE ΑΣΦ Ro = What is the activity in Bq of a 2.6…
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Q: A sample of radioisotope has a decay constant of 9.978×107 s1 and prepared with an initial activity…
A: Given: The decay constant of the radioactive sample is 9.978x10-7 s-1. The initial activity of the…
Q: A radioactive sample of 60Co (t₁/2 = 5.271 y) has a ß- activity of 4.4 X 107 Bq. How many grams of…
A: When the number of protons and neutrons inside a nucleus is not balanced some nuclei will become…
Q: A drug tagged with Tc (half-life= 6.05 h) is prepared for a patient. If the original activity of the…
A: Given:-Original activity (Ao)=1.1*104 Bq.Time (t) = 1.8 hoursHalf life = 6.05 hFind Activity…
Q: Calculate the activity due to 14C in 1.00 kg of carbon found in a living organism. Express the…
A: The formula of activity is,
Q: The ceramic glaze on a red-orange Fiestaware plate is U2O3 and contains 50.0 grams of 238U , but…
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Q: A solution of In-111 DTPA from the Amersham Corp. in Great Britain arrives in your department with…
A: The half-life of In-111 according to the chart of nuclides is…
Q: A 70kg patient is injected with 2.0 x 1013 atoms of Tc99m for a nuclear medicine imaging study.…
A:
Q: A conducting wire shaped in a “U shape” is connected to a 5 ohm light bulb. The 0.8 T external…
A: We have to know about a basic formula.
Q: A 7. A saline solution of 24Na with an activity of 300 kBq is injected into the bloodstream of one…
A: The objective of the question is to calculate the patient's blood volume using the given activity of…
Q: Explain why 231-Th-90 is likely to be a beta minus emitter
A: Why 231-Th-90 is likely to be a beta minus emitter.
Q: A small region of a cancer patient’s brain is exposed for 24.0 min to 475 Bq of radioactivity from…
A: Given: To find the dose in rads with the given values as,
Q: The radioactive cobalt isotope, 60Co, has an half-life of 63 months and undergoes decay. The molar…
A: Radioactivity is a process in which unstable heavy nuclei convert into more stable lighter nuclei…
Q: What is the activity of a 398.8-g lump of carbon that is 2.79 x 10" years old? Give your answers in…
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Q: 6 The radioactive isotope, C does not occur naturally but it is found at con- stant rate by the…
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Q: Iodine-131, a beta emitter, has a half-life of 8 days. A 2-gram sample of initially pure iodine-131…
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Q: Strontium-90 from the testing of nuclear bombs can still be found in the atmosphere. Each decay of…
A: The amount of nuclei initially absorbed is
Q: A piece of charcoal used for cooking is found at the remains of an ancient campsite. A 0.92-kg…
A: The initial activity of the sample can be obtained as R0=0.92×103 g15.0 decays/min11g=1.38×104/min
Q: "The residential smoke detector. Residential smoke detectors use a simple ionization chamber, open…
A: Ionization current
Q: A 250 mg sample at 228 Ac has an activity of 207 * 10 ^ 16 atoms per second. What is the half life?
A:
Q: Natural uranium is 0.7200% 235U and 99.27% 238U. What were the percentages of 235U and 238 U in…
A: 99.27% of 0.72% of t=4.5
Q: The half-life of 43100Tc, a ß- emitter, is 15.8 s. a). How many atoms of 43100Tc are present in a…
A: Half life of decay = 15.8 Activity of sample = 0.2×10-6 = 3.7×1010 ×0.2×10-6 = 7400Bq
Q: A building has become accidentally contaminated with radioactivity. The longest-lived material in…
A:
Q: The half-life of 231Pa is 3.25 × 104 years. How much of an initial 10.41 µg sample remains after…
A: Given that half life of 231Pa is 3.25* 10^4 year and initial amount of sample is 10.41microgram.…
Q: The C14 with an activity of 10 Ci is in a 1.0 mm thick lead box. Calculate the number of beta…
A: C14 has an activity of 10 Curie1 curie is defined as 3.7×1010 decays/sSo, 10×3.7×1010=37×101037×1010…
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