If 13% of Americium decays in 7 hours, what is the half-life of Americium in hours?...

If 13% of Americium decays in 7 hours, what is the half-life of Americium in hours? Round your answer to 3 decimal places.

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milcah answered 2 years ago

the half-life of a radioisotope 63 hours how much time will elapse if the radioisotope decays...

the half-life of a radioisotope 63 hours how much time will elapse if the radioisotope decays to one-fourth of its original mass?

3816S decays by beta emission to 3817Cl. This reaction has a half‐life of 2.87 hours. The...

3816S decays by beta emission to 3817Cl. This reaction has a half‐life of 2.87 hours. The 3817Cl subsequently decays by beta emission to 3818Ar. This reaction has a half‐life of 37.3 min. a) How much will remain of an initially pure sample of 3.5 mg 3816S after 9.35 hours? b) How many mg of 3817Cl will be present after 9.35 hours? c) How many mg of 3818Ar will be present after 9.35 hours?

Strontium-90 decays to Y-90 by beta decay with a half-life of 28 yrs. Y-90 decays by...

Strontium-90 decays to Y-90 by beta decay with a half-life of 28 yrs. Y-90 decays by beta decay-to Zircomium-90 with a half-life of 64 hrs. What is the composition of the original Strontium -90 sample after (a) 1 hr, (b) 10 yrs?

Escitalopram with half life 27 - 32 hours question 1 half life 27-32 hours Calculate how...

Escitalopram with half life 27 - 32 hours question 1 half life 27-32 hours Calculate how long it takes to eliminate 95% of a single dose of escitalopram from the body. Provide the range of values and the equation used. From the given pharmacokinetics parameter, explain which elimination model of escitalopram is likely to follow. questionB what is the mechanism of actions of escitalopram, and the affect escitalopram has on the structure of the target site Identify the molecular target...

The Plutonium isotope 239Pu has a half-life of 24,000 years and decays by the emission of...

The Plutonium isotope 239Pu has a half-life of 24,000 years and decays by the emission of a 5.2 MeV alpha particle. Plutonium is not especially dangerous if handled because the activity is low, and the alpha radiation doesn’t penetrate the skin. However, there can be serious health concerns if the tiniest particles are inhaled and lodge deep in the lungs. This could happen following any kind of fire or explosion that disperses Plutonium as dust. a) (3 pts.) Soot particles...

Radium-226 (226.025402 amu) decays to Radon-224 with a half life of 1.6x103 years. What volume of...

Radium-226 (226.025402 amu) decays to Radon-224 with a half life of 1.6x103 years. What volume of Radon gas (at 25 degrees Celsius and 1.0 atm) is produced by 25.0 grams of Radium in 475.0 days?

a. Bismuth-214 decays by alpha emission with a half-life of 19.7 minutes. If 15.0 grams of...

a. Bismuth-214 decays by alpha emission with a half-life of 19.7 minutes. If 15.0 grams of Bismuth-214 is placed in a sealed vessel, what mass of the Bismuth will have decayed after 35.0 minutes? b. How long will it take for a sample of carbon-14 to decay such that only 70% of the original sample of carbon-14 remains? c. In a process called "positron-electron annihilation," a positron collides with an electron, and both particles are destroyed. During this process, the...

Given data: Ln2=0.693, 1Ci=3,7.1010 des/s 140Ba radionuclide with half-life Tp=306 hours decays to its daughter 140La...

Given data: Ln2=0.693, 1Ci=3,7.1010 des/s 140Ba radionuclide with half-life Tp=306 hours decays to its daughter 140La with a half-life of Td=40.3 hours and to stable granddaughter 140Ce. The scheme of the decay is illustrated as follows: 140Ba → 140La → 140Ce The parent, 140Ba, has an initial activity of A0=5mCi. The initial number of nuclei (at t=0) of the daughter 140La is N0 = 0, and tm is the time when the daughter activity reaches its maximum value. The equations of...

Rubidium-87 decays by β production to strontium-87 with a half life of 4.7 × 1010 years....

Rubidium-87 decays by β production to strontium-87 with a half life of 4.7 × 1010 years. What is the age of a rock sample that contains 105.9 µg 87Rb and 7.9 µg 87Sr ? ____ years old Assume that no 87Sr was present when the rock was formed. The atomic masses are given in the table below: Nuclide Atomic Mass 87Rb 86.90919 87Sr 86.90888

81Sr decays by positron emission with a half-life of 22.2 minutes. Starting with 885g of Sr-81,...

81Sr decays by positron emission with a half-life of 22.2 minutes. Starting with 885g of Sr-81, how much remains after 75.0 minutes?

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