**How to find out the half-life of a radioactive isotope**

So the answer to the exam question is: for a substance with a half-life of 2 hours, 1/8 of the original atoms will remain after 6 hours. Note that this also means that 7/8 of …... For example, to work out half a percent of 240, type 240 into the calculator. Then press the multiply button, followed by 0.005 (the numerical value of half a percent) and then the equals button: 240 × 0.005 = 1.2. So, half a percent of 240 is 1.2.

**How to Calculate Half Life 6 Steps (with Pictures) - wikiHow**

For example, to work out half a percent of 240, type 240 into the calculator. Then press the multiply button, followed by 0.005 (the numerical value of half a percent) and then the equals button: 240 × 0.005 = 1.2. So, half a percent of 240 is 1.2.... Half-Life is a first-person shooter that requires the player to perform combat tasks and puzzle solving to advance through the game. Unlike most of its peers at the time, Half-Life used scripted sequences, such as a Vortigaunt ramming down a door, to advance major plot points.

**How do scientists find out the half lives of elements. r**

The initial activity is 80Bq. The time for this to halve to 40Bq, 40Bq to 20Bq, 20Bq to 10Bq and so on is 2 days. The half-life is 2 days. Here is the same information presented in a graph. how to know a chest drain is sealed The half-life of a radioactive isotope (usually denoted by t 1/2) is a more familiar concept than the mean-life, so although the equations above are expressed in terms of the mean-life…

**How do scientists find out the half lives of elements. r**

Tagged with Valve, Half-life 2: Episode Three, Half-Life 2: Episode Two, Half-Life 3. If you click our links to online stores and make a purchase we may receive a few pennies. Find more information here . how to keep rats out of your garden One does not need to observe the exponential time dependence to measure the half-life of a long-lived isotope, such as Uranium 238 (4.47 billion year half life).

## How long can it take?

### Half Life Calculator - Calculates Time Half- Time

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## How To Find Out Half Life

1/11/2011 · This is an easy one because the time (60 minutes) is an exact multiple of the half life, and each half life the amount decreases by a factor of two.

- 1/11/2011 · This is an easy one because the time (60 minutes) is an exact multiple of the half life, and each half life the amount decreases by a factor of two.
- Find out the age of any organic or mineral sample Half-life by definition is the time required for a substance to reduce to half of its initial value.
- The rate of decay is a fixed rate called a half-life. The half-life of a radioisotope describes how long it takes for half of the atoms in a given mass to decay. Some isotopes decay very rapidly and, therefore, have a high specific activity. Others decay at a much slower rate.
- Half-Life is a first-person shooter that requires the player to perform combat tasks and puzzle solving to advance through the game. Unlike most of its peers at the time, Half-Life used scripted sequences, such as a Vortigaunt ramming down a door, to advance major plot points.