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The time required for half of the atoms in a radioactive substance to disintegrate.
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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.
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.
Definition of half duplex channel?
half duplex channel
