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The time required for half of the atoms in a radioactive substance to disintegrate.
What else can I help you with?
What is the half-life chlorine-35?
Cl 35 is stable, which by definition means it has no measurable half-life.
After one half-life what percent of the original uranium remains?
By definition, 50%. Half life is the time for half of the original sample to decay.
What is the scientific definition of half-life?
All elements have a certain "life-span," until they degrade into either sub-atomic particles, or react with something else. Half-Life is literally the half-point in their life-span.
Best definition of half-life for a radioactive substance?
The half-life of a radioactive substance is the time it takes for half of the atoms in a sample to decay. It is a constant characteristic of each radioactive isotope. After one half-life, half of the original substance will remain, and the other half will have decayed into other elements.
How much of a sample of radioisotope remains after one half-life?
One-half of the original amount. That's precisely the definition of "half-life".
What is the formula for half-life?
In chemistry, the half-life of a reaction is defined as the time needed for the concentration of a reactant to decrease to half of its initial concentration. According to that definition, the half-life of the reaction will be t1/2 = 0,693/k where k is the equilibrium constant for that reaction at a specific temperature.
What is the definition of half -life?
All elements have a certain "life-span," until they degrade into either sub-atomic particles, or react with something else. Half-Life is literally the half-point in their life-span.
How many half life games are there?
Half-Life, Half-Life: Blueshift, Half-life: Opposing Force, Half-life: High Definition pack (might not classify as a game), Half-Life: Source, Half-Life 2, Half-Life 2: Episode 1, and Half-Life 2: Episode 2. Eight games total not including countless mods created by fans that you can download for free on moddb.com and fileplanet.com. Other games by Valve software include Left 4 Dead, Left 4 Dead 2, Portal, Portal 2, Counter Strike, Counter Strike: Source, Team Fortress, Team Fortress 2, and Alien Swarm. Another Half-Life game would be Half-Life: Decay. You might also be able to count Half-Life Deathmatch and Half-Life 2 Deathmatch.
Is the best definition of half-life for a radioactive substance A. Half of the amount of time required for all of the radioactive atoms to decay. B. The amount of time required for half of the rad?
The best definition of half-life for a radioactive substance is B. The amount of time required for half of the radioactive atoms to decay. This concept describes the time it takes for a given quantity of a radioactive isotope to reduce to half its original amount through the process of radioactive decay. Option A is incorrect because it inaccurately suggests that half-life refers to the time for all atoms to decay, which is not the case.
What is the definition of half-life?
All elements have a certain "life-span," until they degrade into either sub-atomic particles, or react with something else. Half-Life is literally the half-point in their life-span.
What is the definition of half crescent?
a half of a full moon
A potassium 40 sample starts with 50 atoms and 1.25 billion years later there are 25 atoms What is the half life of potassium 40?
1.25 billion years: 25/50 or half the original atoms have disintegrated in 1.25 billion years, and that is the definition of half life.
