With the help of a mass spectrometer,% abundance ratios and Atomic mass (u) values ​​of various isotopes of the element krypton (36Kr) are given in the table as shown in the figure. Find the 'average atomic mass (u)' value of the krypton element according to these data?     İsotope (Kr) Abundance Ratio % Atomic Mass(u) 78 0,356 77,924610 80 2,270 79,916380 82 1,460 81,913482 83 11,500 82,914135 84 57,000 83,911507 86 17,000 85,910616

Q: 3. Given the number of protons, neutrons and electrons, find the mass and name of an isotope

A: Since you have given multiple question to answer, I would solve only one as per the Bartleby…

Q: The dimensions of energy are _____ a) [ML2T-2] b) [MLT-2] c) [ML2T-1] d) [MLT-1]

A: To find: the dimension of energy

Q: An element loses 22% of its mass every year, what is the half life?

A: Let the original mass of element be No and it loses 22% of mass its mass in a t=365 days i.e.,…

Q: By READING the R vs t graph shown below, determine R. & the R(x10¹² decays/s) 12 mean life.

A: Half life is time taken to reduces the number to half.

Q: If a material has a half life of 92.5 days, how long will it take for 75% of the material to decay?…

A: Half life of the material=92.5days 75% of the material decay

Q: A sample of radioactive material contains 1000 atoms. A half-life of this material is 2 days. How…

A:

Q: What is the half-life of this radioactive material (Barium 137) in seconds? Now, if we waited 8…

A:

Q: How long does it take for 70% of a given radioactive element to decay, given that its half-life is…

A: Given value--- Half life time = 8.04 days. We have to find--- How long does it take for 70% of a…

Q: Question: In electrically neutral atoms, how many neutrons are in the 202 H g nucleus?

A: Given: Mass number of Hg nucleus A = 202. Required : Number of neutrons (N). Mass number (A) =…

Q: Define atomic number.

A: The atomic number of an element in periodic table  is the number of protons in the nucleus of an…

Q: The half-life of a certain radioactive substance is 9 years. What is the yearly decor factor?

A: Given,

Q: The half-life of radium-226 is 1600 years. How long will it take for 10.0 mg of radium-226 to decay…

A: Using half life concept to solve the problem

Q: Plutonium has a half-life of 80 million years. How long will it take for a sample of plutonium to…

A: When a nucleus becomes unstable it will undergo radioactive decay to attain a stable configuration.…

Q: raph the “Number of Nuclei in the Sample” versus the “Half-life Number.” If the sample has 1/8 of…

A: The final concentration of radioactive nuclei is We know that;Here, n is the number of half-lives,…

Q: A pure carbon archaeological artefact has an age of 24421 years and emits 14 electrons per minute.…

A:

Q: Cobalt―60 is a radioactive isotope with a half-life of 5.26 years and emits beta particles. i)…

A: Half life = 5.26 years Number of atoms = 2.5 ×1021

Q: A radioactive substance has a half-life of 10 days. If there is initially 500 grams of the…

A: Half life T1/2 =10 days Initially substance N0= 500 gramstime elapsed t=30 days

Q: A pure carbon archaeological artefact has an age of 19603 years and emits 18 electrons per minute.…

A:

Q: A radioactive nucleus decays by two different processes. The half-life for the first process is 10 s…

A: We have,T1=10 sec ; λ1=ln2T1T2=100 sec ; λ2=ln2T2 , λeq=ln2Teq

Q: A nuclear isotope has a mean lifetime of 76.7 s. What is the half life of this isotope? Number If…

A: a) Given, mean life time, τ = 76.7 s and the relation between mean life time and half life T1/2 is,…

Q: A radioactive element has an original mass of 150 grams. How much would be left in the parent atom…

A:

Q: THe half life of a radioactive isotope 'X' is 20 years. It decays to another element 'Y' which is…

A:

Q: Isotope X has a half-life of 100 days. A sample is known to have contained about 1,500,000 atoms of…

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: The uranium isotope U-238 has a half-life of about 4.5 × 109 years. i) BOOKWORK Consider 1 mole (238…

A: Given that: Half life of Uranium:T1/2=4.5×109 years=1.42×1017secMolar mass: M=238 gmsHalf life of…

Q: An ancient rock is found to contain 40Ar gas, indicating that of the 40K in the rock has decayed…

A: To solve this problem, we need to use the concept of half-life and the relationship between the…

Q: C has a half life of 5,730 years. How many 6C atoms would you need in order to measure an average of…

A: Here given the half life of 14C is 5730 year. There is an average decay of 10 decay per sec. We have…

Q: Q2- What happens to the atomic number and mass number of a nucleus when it a- Emits an alpha…

A:

Q: When was element Plutonium discovered? O 1935 O 1943 O 1941 O 1940

A:

Q: (a) What is the wavelength of the photon needed to excite an electron from E₁ to E4? x 10 (b) What…

A:

Q: Cobalt-60 has many medical applications. If the half-life of cobalt-60 is 5.25 years, how long after…

A: Given data: The half-life of the cobal-60 is T=5.25 years The ratio of the final to intial sample…

Q: Carbon-12 is used to date objects. True False

A: Stable isotopes of carbon are : Carbon - 12 and Carbon - 13 Unstable isotope of carbon is : Carbon -…

Q: How many years are needed to reduce the activity of 14C to 0.020 of its original activity? The…

A:

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…

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.