If the initial amount of lead -196 is 4.8 g, how much lead -196 is left in the body after 74 min

Q: If you know a sample is 2715 years old, what percent of carbon 14 would you expect to find in the…

A: Given that:                     Given time for the sample = 2715 years To find:…

Q: A human bone uncovered in a burial site in Majorca, Spain by a student working for the pollentia…

A: percentage amount of C- 14 = 5.55% Age Of Human remain = to be calculated

Q: Questlen ? Technetium-99, a radioactive tracer used in medicine has a half life of 14.6 hours. How…

A: Given, Half-life ( t1/2) = 14.6 hours

Q: A sample of carbon-14 has a mass of. 24.77 g. How much will be left after O half-lives? Type your…

A: Given the mass of carbon-14 sample = 24.77 g

Q: How much of a 100. g sample of Gold (Au-198) is left after 8.10 days?

A: Atoms of higher atomic masses are unstable and decays to give stable atoms.  These are generally…

Q: y radioactive decay–ar

A: Alpha decay decreases the mass number(A) by 4 and an atomic number(Z) by 2

Q: . Barium – 122 has a half-life of 2 minutes. Suppose you obtain a sample weighing 10.0 g and it…

A:

Q: 4. Iron-59, which is used to diagnose anemia, has a half-life of 45 days. What fraction of it is…

A: we know that,→ Radioactivity phenomena follow first owen                            knnetics.so,…

Q: How is energy created in mass conversion ?

A: Mass can be converted to energy by using Einstein’s mass- energy equation.The mass-energy…

Q: what fraction of the initial 14C atoms is still there?

A:

Q: Tin-129 is radioactive and has a half life of 2.23 minutes. What percentage of a sample would be…

A: Given Half Life = t1/2 = 2.23 minutes  By using Formula kt1/2 = ln 2k * 2.23 minutes = 0.693k = 0.31…

Q: 55. 23. Potassium-40 has a half-life of 1.25x10^9 years. How many months will it take for one-half…

A:

Q: Given the notation: 94Zr, how many protons, electrons, and neutrons does the particle contain?

A:

Q: Tin-129 is radioactive and has a half life of 2.23 minutes. What percentage of a sample would be…

A: Answer:

Q: when it died. How much remains after 5 half lives

A: As we know, Radioactivity follows first order kinetics. So, after nth half life time , amount(A)…

Q: Iodine-125 is radioactive and has a half life of 60.25 days. How much of a 7.20 mg sample would be…

A: The solution is as follows :

Q: 12) How much material is left when you start with 22.5-g and you have gone through 3.66 half-lives?

A: According to guidelines i can answer only first question. Please repost the other question…

Q: 1. Iron-59, which is used to diagnose anemia, has a half-life of 45 days. What fraction of it is…

A: As in the question, it is given that Iron-59 is used to diagnose anaemia and has a half-life of 45…

Q: If the original amount of lead-210 in a sample is 51.4 mg, how much time is needed for the amount of…

A: Given, initial amount of lead-210 = 51.4 g            remaining amount of lead-210 = 21.0 g The…

Q: If there are 37 kg of the element left after 25 days,in prob 3, what was the initial amount of the…

A: The rate of the reaction is referred to the change in the molar concentration in the distinct…

Q: 5. Manganese-56 has a half-life of 2.6 hours. How much manganese would have disappeared after 7.8…

A: Given, Half life of Manganese-56 = 2.6 hours Initial amount of manganese-56 = 20 g Amount of…

Q: Where are Uranium and plutonium found?

A:

Q: Phosphorus-32 has a half-life of 14.0 days. Starting with 8.00 g of 32P, how many grams will remain…

A:

Q: A substance has gone through 3 half lives. What percentage of the sample would remain?

A: Remaining % of sample can be calculated by      =     Original sample/ 2n assume original sample =…

Q: Gold-198 has a halflife of 2.7 days. How much of a 872.5 mg gold-198 sample will remain after 13.5…

A: Given:  Half-life (t1/2) of gold-198 = 2.7 days The initial amount of gold-198 = 872.5 mg

Q: How many mLmL will be injected into a patient?

A:

Q: A scientist puts 250 grams of radioactive radium having a half life of 1690 years into a concrete…

A:

Q: 11) What is the radioactive particle released in the following nuclear equation? 90 Sr 38 90Y + ? 39…

A: The decay process when neutron is converted into a proton then the mass number does not change but…

Q: A certain radioactive material is known to decay at a rate proportional to the amount present. If…

A: According to question,Given data,Initial amount of radioactive material = 50 mg,After time t = 2…

Q: A chemical substance has a half-life of 5 hours.If you start with a 133 gram sample when will there…

A: Introduction: We have to calculate the time when substance remaining is 2g.

Q: 2. The population of a country doubles in 50 years. HOW Imany juut habitants. 3. Radium decomposes…

A: Amount of radium is decomposing with respect to time and is proportional to amount present. Half of…

Q: How does half-life relate to radioactive decay?

A: The half-life (t1/2) is the time required by any quantity to reduce half of its initial value.

Q: A sample of a material has 400 radioactive particles in it today. Your great-grandmother measured…

A: Number of Radioactive particle measured by grandmother 100 year ago from now = 800 particles Number…

Q: Calculate the mass equivalent in grams of 15.0 kJ of energy.

A: Energy is given as 15.0kJ.  It is equal to 15000 J

Q: If the initial sample is 8.25 g, what mass of the original iridium‑192 remains after 105 days?

A: The nuclear reactions are a type of chemical processes which lead to the formation of some new…

Q: Chromium-51 is a radioisotope that is used to assess the lifetime of red blood cells The half-lfe of…

A: Given: The half-life of chromium-51 is 27.7 days The amount of the isotope is 34.3 mg The time (t)…

Q: if you start with 50 grams of cobolt-60 how many grams would you have of it left after 5 half lives

A:

Q: Bromine-88 is radioactive and has a half ife of 16.3 seconds. What percentage of a sample would be…

A:

Q: 3. Plutonium 238 is a radioactive element that decays at a rate of 0.8% per year. (a) What…

A: Given, rate of decay of Plutonium -238 is 0.8 % per year.

Q: Explain the differences between alpha, beta and gamma decay Be sure to include why atoms decay in…

A: If the no of protons and neutrons in a atomic nucleus is not balanced because of that atoms undergo…

Q: Identify

A: This reaction decay is fast decay with comparison to radioactive decay in Nature.

Q: 12) How much material is left when you start with 15-g and you have gone through 1.63 half-lives?

A: Radioactive decay happens when a nucleus is subjected to radiation and breaks down into a number of…

Q: A patient is given a 0.05 of 6 hours. How long will it be until mg dose of e which has a holf-life…

A:

Q: Phosphorus- 32 is radioactive and has a half life of 14.3 days. How much of a 2.70mg sample…

A: The rate constant for the reaction, k, is calculated as shown below where t1/2 is the half-life for…

Q: half-life

A:

Q: If there were 300 grams of carbon-14 originally present, how many years would it take for there to…

A: Interpretation -  To determine how many years would it take for there to be 90 grams of carbon-14…

Q: The noble gas radon has been the focus of much attention because it may be found in homes. Radon-222…

A: Write the balanced equation of Rn-222 on alpha decay ?

Q: If you are given 150 mg of Technetium-99 to treat brain cancer, how much of it will remain in your…

A:

Q: Tin-129 is radioactive and has a half life of 2.23 minutes. What percentage of a sample would be…

A: