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How many grams of a 35 gram sample of radium will decay in 5000 years if the half-life of radium is 1602 years?
Wiki User
∙ 14y ago
approx. 31 g.
Wiki User
∙ 14y ago
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How many milligrams of a 15.0 mg sample of radium-226 remain after 6396 years if the half-life of radium-226 is 1599?
One sixteenth of a gram. 1st halflife- 1/2 gram 2nd, 1/4 3rd 1/8th 4th halflife, 1/16th
How old is a sample of granite that contains 8 grams of radioactive potassium-40 and 56 grams of its nonradioactive decay products?
3.9 x 10^9
A Radio Decay Isotopes Has A Half Life Of 100 Years . A Sample Of 40 Grams Of The Isotopes Will Have A Mass Of Grams In 200 Years?
10 grams... If the half-life is 100 years, that means after 100 years, half the original mass remains. After another 100 years, the mass is halved again. 40/2=20... 20/2=10.
What is radioactive half life of an element?
The half-life of a radioactive element is the time required for one-half of the nuclei of a radioisotope sample to decay to products.Half-life (t½) is the time required for a quantity to fall to half its value as measured at the beginning of the time period.
How long does it take a 200 gram sample of carbon-14 to decay to a mass of 100 grams?
About 5700 years. The half-life of carbon-14 is 5700 years, and the question is asking how long for 200 grams to become 100 grams. That is half, so the answer is 5700 years. It will take another 5700 years for the mass to further decay to 50 grams, and another 5700 years to decay to 25 grams.
How much of one gram of radium-226 will remain unchanged after four half-lives?
After each half-life, half of the radium-226 will decay. Therefore, after four half-lives, 1/2^4 or 1/16th of the original gram of radium-226 will remain unchanged. This means that 1/16th of a gram, or 0.0625 grams, will still be unchanged after four half-lives.
How many milligrams of a 15.0 mg sample of radium-226 remain after 6396 years if the half-life of radium-226 is 1599?
One sixteenth of a gram. 1st halflife- 1/2 gram 2nd, 1/4 3rd 1/8th 4th halflife, 1/16th
How much of an 800-gram sample of potassium-40 will remain after 3.9109 years of radioactive decay?
100 grams
How many moles in 500 grams of radium?
500 grams of radium is equal to 2,21 moles.
How old is a sample of granite that contains 8 grams of radioactive potassium-40 and 56 grams of its nonradioactive decay products?
3.9 x 10^9
How long does it take a 5-gram sample of uranium- 235 to decay to a mass of 2.5 grams?
One Half-Life :-)
How much of an 800-gram sample of potassium-40 will remain after 3.9 X 109 years of radioactive decay?
100 grams
What is the half life of a radioactive isotope if it takes 6.2 days for a 72 gram sample to decay to 18grams?
18 grams are one fourth of the original sample mass of 72 grams. Accordingly, the half life is 6.2/4 = 1.55 days.
Carbon-14 has a half-life of 5730 years. How long does it take a 200-gram sample of carbon-14 to decay to a mass of 100 grams?
5,730 years
Carbon-14 has a half-life of 5730 years. how long does it take a 200-gram sample of carbon-14 decay to a mass of 100 grams?
5,730 years
Mass number of radium?
The density of radium at about room temperature is 5.5  g·cm−3. That's 5.5 grams per cubic centimeter, or 5.5 grams per milliliter. A link to the Wikipedia article on radium is provided.
How much does 10 grams of radium cost?
Radium is not a common commercial product; radium is sold only to qualified and authorized research laboratories, generally in the form of radium chloride solutions or neutron sources Ra-Be.
