Table of Contents
- 1 What percentage of iodine-131 is left after 32 days?
- 2 What is the half-life of iodine-131 after 32 days?
- 3 How long will it take for a 40.0 gram sample of I 131?
- 4 What is the half-life of iodine-131 Quizizz?
- 5 How long will it take the 40 grams of I-131 to decay to approximately 1 100 its original mass?
- 6 How much of a sample is left after the third half-life?
- 7 How much iodine is left after 32 days?
- 8 How to calculate the half life of radioactive decay?
What percentage of iodine-131 is left after 32 days?
Explanation: 32 days means 4 half lives since one half life is 8 days. That means it will be halved 4 times… so the ratio between the initial amount and the amount after 32 days will be 0.54 . There will be 2.2 grams left.
What is the half-life of iodine-131 after 32 days?
8.07 days
1: The half-life of iodine-131 is eight days. Half of a given sample of iodine-131 decays after each eight-day time period elapses….10.3: Half-Life.
| Nuclide | Half-Life (t1/2) | Decay Mode |
|---|---|---|
| Hydrogen-3 | 12.26 years | β− |
| Iodine-131 | 8.07 days | β− |
| Nitrogen-16 | 7.2 seconds | β− |
| Phosphorus-32 | 14.3 days | β− |
What is the half-life of iodine-131 is after 24 days?
8 days
The half-life of iodine-131 is 8 days. Since the half-life is 8 days, 24 days corresponds to 3 half-lives.
What is the half life of iodine-131 Quizizz?
Q. The half life of iodine-131 is 8.040 days.
How long will it take for a 40.0 gram sample of I 131?
How long will it take for a 40.0 gram sample of I-131 (half life = 8.040 days) to decay to 1/100 its original mass? 1/100= 0.01. Suppose that n – is number of half lifes, then (1/2)n = 0.01 then n = 6.64. So, the time is 6.64*8.040 = 53.4days.
What is the half-life of iodine-131 Quizizz?
How long will it take for a 40.0 gram sample of I-131?
What is the decay equation for iodine-131?
Iodine-131 is a beta emitter commonly used in nuclear medicine. The equation for its decay is: Note that both the charge and the mass are balanced and that iodine-131 emits both a gamma ray and a beta particle….
| Radiation emitted | Change in Atomic number | Change in Mass number |
|---|---|---|
| gamma ray | 0 | 0 |
How long will it take the 40 grams of I-131 to decay to approximately 1 100 its original mass?
How much of a sample is left after the third half-life?
After three half-lives 1/8 (12.5%) of the original sample remains. A half-life is the amount of time it takes for one half of a sample to undergo…
What is a half-life Quizizz?
What is Half-life? The amount of time it takes for some of the nuclei in a sample of the isotope to decay. The amount of time it takes for half the electrons in a sample of the isotope to decay.
What is the half life of iodine 131?
Iodine-131 is a radioactive isotope with a half-life of 8 days. How many grams of a 64 g sample of iodine-131 will remain at the end of 24 days? | Socratic
How much iodine is left after 32 days?
32 days means 4 half lives since one half life is 8 days. That means it will be halved 4 times… so the ratio between the initial amount and the amount after 32 days will be 0.5^4. There will be 2.2 grams left.
How to calculate the half life of radioactive decay?
Nuclear half-life expresses the time required for half of a sample to undergo radioactive decay. Exponential decay can be expressed mathematically like this: #A(t) = A_0 * (1/2)^(t/t_(“1/2”))# (1), where. #A(t)# – the amount left after t years; #A_0# – the initial quantity of the substance that will undergo decay;
How to calculate the half life of a nuclear bomb?
It started from a mass of 67.0 g and it took 98 years for it to reach 0.01 g. Here’s how you would determine its half-life: Therefore, its half-life is t1/2 = 98.0 12.7 = 7.72 years.