The half-life of a radioactive isotope is 6.02 hours.  25.0 Grams of this isotope is needed for an experiment.  How many grams of the isotope must be ordered if 48 hours pass between the time the isotope is ordered and the start of the experiment

Q: The activity of a particular radioactive nuclide falls from 1 × 1011 Bq to 2 × 1010 Bq in 10 hours.…

A: Calculate the decay constant of the radioactive nuclei. A=A0e-λt2×1010 Bq=1×1011 Bq×e-λ×10 he-λ×10…

Q: The radioactive isotope (1Os) has a half-life of 22.1 hours. How much of 49.5 g of this isotope will…

A: If initial quantity is N0 and after t time the quantity is N then…

Q: A particular radioactive material was weighed exactly 1 year ago, showing a mass of 200 g. If the…

A: Given: Mo=200 gM=23.0 gt=1 year = 365 days

Q: 18.Examine the table.  Isotope Half-Life (yrs) Carbon-14 5.715x10^3 Plutonium-239 2.41x10^4…

A: Given that, The half-life of Carbon-14 is 5.715×103 years The half-life of Plutonium-239 is 2.41×104…

Q: A radioactive sample with a half-life of five hours. Calculate the radioactive efficiency after…

A: Given Half life of radioactive sample t12 = 5 hour

Q: The activity of a radioactive isotope is 16000 disintegrations/sec. The activity drops to…

A:

Q: A radioactive source consists of 6.4 x 10^11 atoms of a nuclide of a half-life of 2 days. A second…

A: According to question we need to find--- After how many days will the number of radioactive atoms…

Q: if you started with a parent isotope with 100% of its atoms and its half-life is 10 years. What is…

A: Given. t/T = 2 N(t) = No(1/2)t/T

Q: The half-life of radio-active isotopes is 140 days. How many days would it take for the activity of…

A: Given data: the half life of radio-active isotope, t1/2 = 140 days

Q: Can you help solve this?

A: Since there are multiple questions posted, we will answer the first question. Half-life is defined…

Q: sample of radioactive material starts with 0 grams. After 3 half lives have passed, how much…

A: Half-life is the amount of time it takes for one half of a sample of a radioactive isotope to decay.…

Q: Calculate the mass of a sample of (initially pure) 40K that has an initial decay rate of 1.70 * 105…

A: The initial decay rate,

Q: If two grams of a radioactive isotope has a half - life of twenty hours, the half life of one gram…

A: half life of two grams of a radioactive isotope = 20 hours

Q: What mass of a 2,400g sample of an isotope will remain after 32.8 days if the half life of the…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: With the help of a mass spectrometer,% abundance ratios and Atomic mass (u) values ​​of various…

A: Given:

Q: certain radioactive material has a half-life of 40 years. How many years will it take the mass to be…

A:

Q: A radioactive sample has an activity R. For each of the following changes, indicate whether the…

A: Activity of radioactive decay is the number of disintegration per second. It can be expressed as

Q: The half-life of a radioactive isotope is the amount of time it takes for a quantity of radioactive…

A: Ans (a) in this question half life of c-14 is given as 5230 years so    Thalf=5230y and we know the…

Q: The activity of a particular radioactive nuclide falls from 1 × 1011 Bq to 2 × 1010 Bq in 10 hours.…

A:

Q: A sample of 1000 radioactive atoms has a 10 minute half-life. How old is the sample when 750 atoms…

A:

Q: A radioactive sample contains 9.5 x 1017 atoms of a nuclide that decays at a rate of 5.4 x 1013…

A: Radioactivity is the process of decay of heavy nuclei due to an unstable nuclei or due to a…

Q: The half-life of a radioactive isotope is the amount of time it takes for a quantity of radioactive…

A: the relation between half life and decay constant is  T1/2 =ln(2)λ where λ is decay constant or…

Q: Radon-220 has a half-life of 55.6 seconds. What are the odds that any particular Radon-220 atom will…

A:

Q: A radioactive sample contains 5.50g of pure N(7, 13), which has a half-life of 10 min. Calculate the…

A: We need to calculate activity after 2 hours and whether this isotope is useful for dating for 10…

Q: 11) Titanium-46 is a stable isotope of the metal Titanium.  It has an atomic mass of 45.95 and…

A: Atomic mass = no. of proton+ no. of neutron Atomic no. = no. of proton

Q: A patient is injected 465 MBq of radioactive isotopes with a half life of 110 minutes. How much…

A: Given: Half life, T=110 min=6600 s Radioactive injected in a body, N0=465 MBq Let's find the…

Q: . The activity of a radioactive sample decreases by 93.75 % in 2.5 years. What is the half-life of…

A:

Q: An isotope of lead, 201Pb, has a half-life of 8.4 hours. How many hours ago was there 30% more of…

A:

Q: Carbon-14 has a half-life of 5730 years. A sample of wood has been recovered by an archaeologist.…

A:

Q: The carbon content of living trees includes a small proportion of C-14, which is a radioactive…

A:

Q: A sample of carbon-14 initially consists of 5 × 10 24 particles. Carbon-14 has a half- life of 5730…

A: Solution: a. Calculate the decay constant for carbon-14 using the following relation. k=0.693t12…

Q: If a sample of a radioactive isotope has a half-life of 3 years, how much of the original sample…

A: The half-life of the sample = 3 years (a) That means, after every 3year the sample becomes half of…

Q: If it is known that 87% of an initial radioactive sample remains after 3 days, what is the decay…

A: Given: The amount of radioactive decay is 87% of the initial amount. The time is 3 days.

Q: What is the half-life of an isotope that decays to 6.25% of its original activity in 24.2 h?…

A:

Q: The radioactive glucose used in PET scans has a half-life of approximately 2 hours. How much of the…

A: Half life (t) of radioactive glucose= 2 hours Time period (T) = 8 hours Let the original amount of…

Q: You are experimenting with a radioactive sample of polonium. At the end of 14.0 minutes, exactly…

A:

Q: Determine the half-life (in s) of a radioactive sample that has a decay rate of 5.60 x 10¹¹ Bq when…

A:

Q: In the table below, the 2-H is called Deuterium; its Atomic Mass is 2.014102. Which choice below is…

A: Mass of Deuterium is given as = 2.014102 No of protons in hydrogen 1 = 1

Q: The isotope Carbon 14 decays by β emission and has a half-life of 5730 years. The carbon in living…

A: This question can easily be solved by applying the concept of radiocarbon dating .

Q: The half-life of the radioactive element unobtanium-53 is 5 seconds. If 176 grams of unobtanium-53…

A:

Q: In 4 years, 3/4 of nuclei of a given radioactive substance is decayed. What is the half- life of the…

A: Definition of  Half life:- Half life of a radioactive sample is defined as the time elapsed before…

Q: The curve to the right shows the radioactive decay of a particular sample of a nucleus called…

A: From the graph, we can notice that No = 400 N = 100 after 10 hrs

Q: A sample of plutonium-239 has a mass of 24.0 mg. If after 72300 years 6.00mg are left, what is the…

A: Given data:  Initial quantity of plutonium (N0) = 24.0 mg Time elapsed (t) = 72300 years  Remaining…

Q: What are isotopes? Why do different isotopes of the same element have similar chemistries?

A: The number of protons present in the nucleus of an atom is called atomic number. It is denoted by Z.…

Q: Iodine-131 is an important radioisotope of iodine that has a radioactive decay half-life and is…

A:

Q: The half-life of a radionuclide is 26.4 years. The time required for a 48.0 gram sample of this…

A: Write the given values of the problem- Half life of a radio nuclide=26.4 years Mass of given…

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.