2. An isotope of sodium 24N a has a half-life of 15 hours. A sample of this isotope has a mass of 2g. (a) Find the amount remaining after 60 hours.  (b) Find the amount remaining after t hours.  (c) Estimate the amount remaining after 4 days.  (d) Estimate the time required for the mass to be reduced to 0.01g

Q: 9. Iodine 131 I is used in diagnostic and therapeutic techniques in the treatment of thyroid…

A: Given value--- half life time = 8.04 days. We have to find--- What percentage of an initial…

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: 4. What is the product when pollonium-210 (210 ^Po\84, where ^ indicates superscript and \ indicates…

A: Step 1: explanation for solution

Q: 7. A radioactive sample consists of a mixture of 35S and 32 P. Initially, 5% of the activity is due…

A: The half-life of the 35S is 87.4 days.Write the expression for the decay constant and substitute the…

Q: 3. A nucleus with 64 nucleons (33 of which are neutrons), undergoes beta-negative decay. The…

A:

Q: Nt/No vs. t -0.0981'x + 0,847 1.00 0.75 0.50 0.25 0.00 2 ONIN

A: The half-life of a radioactive element is defined as the time at which the initial number of nuclei…

Q: 40. Balance the following equation: 239- Th 90 239 U 239 94 2381 94 Pu 239 93

A: Given data:  N93239p → .....+ e-10 Required: Balance the equation

Q: A pair of isotopes is: 238 U and 239 U (A) 92 (B) 293 Np and 239 U 92 239 235 U and Pu 94 (C) 92 233…

A: Required: The correct option.

Q: A radioactive isotope has an activity of 9.27x104 Bq initially. After 3.30 hours the activity is…

A:

Q: Q1(i). The half-life of 20kg of Bismuth-210 is 20 minutes. Explain this statement.  (ii). A…

A: (i) Given: Mass of Bi-210 is 20kg. The half life is 20min. Explanation: Half life is the time…

Q: 190- Some nucleus of ¹9X (atomic mass = 189.96182 u) undergoes decay to become (atomic mass =…

A: The mass of the parent nucleus is 189.96182 u. The mass of the daughter nucleus is 189.95844 u.

Q: The stable isotope of sodium is 23Na. (a) Find the total binding energy and the binding energy per…

A:

Q: In radio-pharmacy Alpha, Beta-plus and Beta-minus are all different particles. Suppose an alpha…

A: The given particle is the alpha particle.

Q: Match the nuclei described below with their corresponding isotope names.

A: Number of Nucleons =no. Of proton + no. Of Neutron This is helpful to find the matching isotope.

Q: What is the nuclear equation for 0 Th (alpha decay)? a. 00 Th 86 230 Ra + He > b. 232 Th 90 Ra + He…

A:

Q: 5. (P19) A nucleus of element 114 is produced by fusing calcium - 48 with plutonium-244. Write the…

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

Q: 5. A radioactive material has a half-life of eight days. How long will it take the material to be…

A: Let initial number of nuclei in the radioactive material be No and it is given that half life of the…

Q: 37 184 H.W: Preparing a pure sample of a radioisotope of argon 1Ar containing 2.5x1016 nuclei. After…

A:

Q: adioactive substance has a half life of 30 minutes. How much of a sample of this substance will not…

A: Given, No = 100%= 1 T= 30min t= 2.5 hours = 150 min We know that, N= No (1/2)t/T

Q: . The decay constant of lodine-123 is 1.34 x 10-5 s-1. What is its half-life and how long will it…

A:

Q: What is the the total binding energy of o 28NI. It isotope mass is 59.930786 u. The mass 60 of a…

A:

Q: B. Write the balanced nuclear equation for the following reactions: 201 1. Alpha emission of Bi 83…

A:

Q: The isotope cesium (Cs)-137 has a half-life of 30 years. How long will it take for this isotope to…

A:

Q: The half-life of a radioactive isotope is known to be exactly 1 h. a) What fraction of a sample…

A: Given in question - Half-life (T) = 1 hour Solution: Step1 - Here we will understand the concept…

Q: "Na is an unstable nucleus that will decay to become neon, Ne . What particles have to be created…

A:

Q: 37 H.W: Preparing a pure sample of a radioisotope of argon 1gAr containing 2.5x1016 nuclei. After…

A: Values are given for initial, final nucleii and the time at which the final nuclei found. By using…

Q: 29) Strontium 90 decays at a constant rate of 2.44% per year. Therefore, the equation for the amount…

A:

Q: 3. The half-life of a particular isotope of iodine is 8.0 days. How much of a 10.0-g sample of this…

A: Given that:A particular isotope of iodine hasHalf life, t1/2=8.0 daysFor initial sample of N0=10.0…

Q: Complete the radioactive decay equation: 31,4Si -> 3115P + ? a. 4He

A: For the reactant 31 14Si of the decay reaction, the atomic number is 14 and the mass number is 31.…

Q: A theoretical isotope X-100 has an initial mass of 500g. This isotope has a half-life of 8 hours.…

A: given data  initial mass = 500 g half-life is 8 hours determine the mass that will remain after 2…

Q: .70 d. Determine the mass of this ooff

A:

Q: The half-life of radium-226 is 1.6 x 10 years. How long will it take for 20.0 mg of radium-226 to…

A:

Q: 13. Choose the correct daughter isotope to complete the alpha decay equation below. The nuclear…

A:

Q: 6. In nature, in a stable state hydrogen has two kinds of isotopes, namely 99.985% 1H with an atomic…

A: It is mentioned that there are two types of isotopes for hydrogen 1) 99.985% 1H with an atomic mass…

Q: 1. The isotope silver-107* undergoes gamma decay. Write the reaction equation, and determine the…

A: Introduction: Spontaneous emission of the energetic particle with high energy and high penetrating…

Q: 6. A certain isotope decays to 10.0% of its original amount in 3 hours. Suppose there are 1.0 x 10¹…

A: Time for decay is given by : t=-tt/20.693 ln NN0

Q: 3. An ancient club is found that contains 150 g of pure carbon and has an activity of 4.5 decays per…

A: Half life of carbon = 5700 yearsAvogardro number one year = 3.153x107sWe know thatand we know that…

Q: Suppose that 3x107 radon atoms are trapped in a basement at the time the basement is sealed against…

A: Given that -- Suppose that 3x107 radon atoms are trapped in a basement at the time the basement is…

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.