How do you find the half life of something?
use this formula
= A= pe^rt = where
p = principle
r = rate
t = time
The rate at which radioactive decay occur is given in half-lifeexplain the term and give the half-life of a few substances?
There is something called Decay on the first half-life where you play as two women during the incident. There is also a half-life 2: deathmatch, and that's more or less it. There is Half-Life Deathmatch and Half-Life Deathmatch: Source. You can also download a mod, "Sven Co-op", which allows you to play the Half-Life story with other players.
The half life of a radioactive element means that half the atoms in that element will decay in that amount of time eg Uranium 238 the most prevalent isotope in Uranium ore has a half life of 4.46 billion years, so half the atoms in any sample of this element will take this length of time to decay. The half life of something is how long it takes for half of it to disintegrate. e.g…
Half life is the time taken for approximately half of the available nuclei in a sample of radioactive material to decay into something else. It's a characteristic of the isotope, for example, the half life of the isotope of iodine, I131 is 8.08 days. Half lives can vary from fractions of a second to thousands of years.
Making any change in the half-life of an isotope of any element is generally something that lies outside our abilities. A very few radioactive materials have demonstrated a change in their half-lives when bathed in intense magnetic fields. Generally, however, the half-life on a given radionuclide is not something that can be changed. A number of experiments have been conducted wherein investigators have deliberately sought to influence radioactive half-life, but in all but the rarest…
Shelf life: Time that something (e.g. food, batteries) can stay good in storage, unused (aka on the shelf). This is a rough estimate that depends on various conditions (e.g. temperature, humidity). Half life: Time that something unstable (e.g. radioisotope) takes to decay to half its previous quantity. This is a physical constant for every item having this property.
A half-life means half the original matter decays and is gone after that period. Something with a 3 hour half-live will have only 1/2 its amount left after 3 hours. After 6 hours, only 1/4th is left, and after 9 hours, only 1/8th is left. After one half-life, half is gone. Half is left. After another half-life, half of the remaining half is gone, leaving one quarter left. After the third half-life, half of the…
I believe that the half-life refers to the amount of carbon in it. By knowing the half-life of carbon it can be used to say how old something is. Ofcourse plus or minus a few years. This is where carbon dating comes from. Hope this helps. EDIT: the half-life refers to the time it takes for an element to decay into its daughter element
Clonazepam is a benzodiazepine. Almost all of the generic names of benzodiazepines end in -pam. Clonazepam has a long half-life. When you are trying to figure out how long something will stay in your system: find the half-life in hours of the substance and multiply by 5. This will give you a number of hours, you then divide by 24 to give you how many days the drug is detectable. Half-life is an approximation and…
Half of the nuclei of a given radioisotope decays during one half-life Why doesnt the remaining half decay during the next half-life?
It goes by halves. After one half decays, the next half is more concentrated, thus over the same time period, only half of that dissolves. This of course leads to the halving theory that you can half something forever, but for now, its just till our microscopes can't see them anymore. Hope this answers it.
How many grams of a 2.5 gram sample of radium-226 will decay in 800 years if the half-life of radium is 1602 years?
The half-life of a radioactive element is the amount of time it takes for half the amount of a sample to undergo radioactive decay and become something else. The half-life of radium-226 is about 1602 years, so the question, which asks after the change in 800 years actually asks about "half a half-life" of a 2.5 gram sample. We don't need a calculator because we're going to round off. If half a 2.5 gram sample…
That refers to the time it takes for half of the substance to decay, and convert to something else. By the way, the half-life is NOT defined for elements, but rather for nuclides, also known as isotopes. The same element can have different isotopes, with different half-lives, or some of the isotopes may be radioactive, others not.
How long your medicine stays in your system is completely dependent upon the medication and your personal body system. Medications are measured by something called their half life. This means the length of time until half the medicine has left the body. The longer the half life, the longer time the medicine will stay in your system. Each medicine has a different half life.
Answer : When the isotopes decay, scientists can find out how old the rock is depending on the radioactive isotope's half-life. Explanation: Radioactive isotopes are unstable and will decay. For example, when humans die carbon-14 decays. The isotopes will decay into a stable isotope over time. Scientists can tell how old the rock was from looking at the radioactive isotope's half-life, which tells them how long it would take for there to be half the…