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How do you calculate the half-life of radiation?
The half-life of a reaction is the time required for the reactant concentration to decrease to one-half its initial value. The half-life of a first-order reaction is a constant that is related to the rate constant for the reaction: t 1/2 = 0.693/k. Radioactive decay reactions are first-order reactions.
What is half-life of a reaction Class 12?
Half life period of a reaction is defined as the time taken for the concentration of a reactant to reduce to one half of its initial concentration. Half life period for a first order reaction is independent of the initial concentration of the reactant.
What is half-life reaction?
The half-life of a reaction is the time required for a reactant to reach one-half its initial concentration or pressure. For a first-order reaction, the half-life is independent of concentration and constant over time.
What is formula for half-life of first order reaction?
The half-life equation for a first-order reaction is t12=ln(2)k t 1 2 = ln ( 2 ) k . The half-life equation for a second-order reaction is t12=1k[A]0 t 1 2 = 1 k [ A ] 0 .
How do you calculate the half-life of a radioactive element?
Answer: T=th xlog(m./m)/log(2) Explanation: You could use this formula: Where Th = half-life. M. = the beginning amount. M = the ending amount. One example of how to use the equation: One of the Nuclides in spent nuclear fuel is U-234, an alpha emitter with a half-life of 2.44 x10^5 years.
What is the half-life of nuclear 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:
How many grams of a radioactive isotope remain in 32 years?
N 0 = mass of the original amount of radioactive material 1. If the half-life of 100.0 grams of a radioactive isotope is 8 years, how many grams will remain in 32 years? To answer this question, there is no need to solve for the radioactive decay equation. If 32 ÷ 8 = 4, then the material will go through 4 half-lives.
What is the half-life of carbon-10?
The half-life of carbon-10, for example, is only 19 seconds, so it is impossible to find this isotope in nature. Uranium-233 has a half-life of about 160000 years, on the other hand. This shows the variation in the half-life of different elements. The concept if half-life can also be used to characterize some exponential decay.