0
100 mg
= 50 mg after 1 hl
= 25 mg after 2 hl
= 12.5 mg after 3 hl
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∙ 13y ago
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What is the atomic mass for 125 pounds?
125 lbs. = 3.414e+28 amu
How many half lives have elapsed to yield a sample with 125 atoms of C-14?
We have now way of knowing unless we know the initial number of C-14
If a sample contains 100g of a radioactive isotope how much will be left after 3 half lives?
There will be 125 grams of radium left. Keep it simple. Ih a half-life, half the sample decays. Half of 1000 grams is 500 grams, then half of 500 grams is 250 grams. Half of that again is 125 grams. And just so you know, the half-life of radium-226, the non-synthetic isotope of radium, is 1602 years. If this was the case here, 4806 years would have to pass to get the sample to decay as far as it did.The remained quantity of radium after 3 x 1602 years is 125 grams.
Do all isotopes have the same half lives?
Yes, all elements have at least one radioactive isotope. Hydrogen has two isotopes, Deuterium and Tritium. H3 has a half life of 12.3 years. Not all isotopes are radioactive. About half way up the atomic mass table, Tin appears to have the greatest number of stable isotopes - ten out of about 124 isotopes in all.
What happens to Iodine-125 brachytherapy seeds after decay?
Iodine-125 (53125I) decays by beta+ decay, with a half-life of 59.4 days, to tellurium-125 (52125Te), which is stable and non-radioactive.
How many half-lives have elapsed to yield a sample with 125 atoms of C-14 and 375 atoms of N-14?
9 half lives have elapsed to yield a sample with 125 atoms of C-14 and 375 atoms of N-14.
What is half of 250?
125
How many grams of sodium-24 will remain at the end of 4 half-lives?
Suppose you start with 1000 g of sodium-24 . t = 0.0 m = 1000 g t = 1 half-life m = 500 g t = 2 half-lives m = 250 g t = 3 half-lives m = 125 g t = 4 half-lives m = 62.5 g
What is the half number between 125 and 250?
The number half-way between 125 and 150 is (125 + 250) / 2 = 187.5.
Are 125 grams and 125 centimeters the same?
No, a gram is a unit of mass (125 grams is about 4.4 ounces[mass]). A centimeter is a unit of length (125 cm is about 49 inches long).
Half of 250 is 125?
Yes, half of 250 is 125. To prove it: use a calculator and calculate 125 times 2.
What is the percent of change from 125 to 135?
percent of change from 125 to 135 = 8%% change =|original value - new value|/original value * 100%= |125 - 135|/125 * 100%= 10/125 * 100%= 0.08 * 100%= 8%
What is The Half of 125?
62.5
What is original price of an item if a discount of 20 percent reduced the price to 100?
$125 was the original price : 80% of 125 is 100.
What is a mineral with mass of 125 grams?
You can weight 125 g from any mineral.
What is the atomic mass for 125 pounds?
125 lbs. = 3.414e+28 amu
How much is 125 kilograms?
125 kg is equal to 8 and a half slugs (which is of course 19 and a half stone, or 1,929,000 grains)
