A radioactice source has a half-life of 14.0 minutes. its acticity is 5.00 microChries at 10:00...

A radioactice source has a half-life of 14.0 minutes. its acticity is 5.00 microChries at 10:00 am. a.) what is the decay constant of the source? b.) how many parents are present at 10:00 am? c.) what is the activity at 10:48 am? d.) how many parents are present at 10:48 am? e.) how many disintegrations occur between 10:00 am and 10:48 am? f.) how many daughters are born durinf this time interval?

Expert Solution

genius_generous answered 1 month ago

Question 1: The element nobelium has a half-life of 58 minutes. Let X be the lifetime...

Question 1: The element nobelium has a half-life of 58 minutes. Let X be the lifetime of an individual nobelium atom. Compute the following: a) P(X>30) b) P(X≤60|X>30) c) E(X) and Var(X) d) P(X>E(X))

The half life of an isotope is 20 minutes. After 2.00 hours, 0.10 grams of the...

The half life of an isotope is 20 minutes. After 2.00 hours, 0.10 grams of the sample remains. how many grams was in the original sample.?

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...

Polonium-218 is an alpha emitter with a half-life of 3.0 minutes. **)If a sample contains 55...

Polonium-218 is an alpha emitter with a half-life of 3.0 minutes. **)If a sample contains 55 mg of Po−218 (atomic mass = 218.008965 amu), how many alpha emissions would occur in 27.0 minutes? **)If the polonium were ingested by a person, to what dose of radiation (in Ci) would the person be exposed? (I need correct answer for this please)

Fluorine-18 has a half-life of 110 minutes. Indicate which statements are true, if any, about fluorine-18...

Fluorine-18 has a half-life of 110 minutes. Indicate which statements are true, if any, about fluorine-18 by checking the box in front of each true statement. A fluorine-18 atom has an equal number of protons and neutrons in its nucleus. A fluorine-18 atom has an odd number of protons and an odd number of neutrons. A fluorine-18 atom undergoes alpha-decay. A fluorine-18 atom undergoes beta-decay. A fluorine-18 atom undergoes positron-decay (positron emission). The half-life for 1.00 g of fluorine-18 atoms...

Radioactive Half Life of Barium-137m: Are the detected activity and actual activity of the source Identical?...

Radioactive Half Life of Barium-137m: Are the detected activity and actual activity of the source Identical? What difference would this make in the analysis of the data?

Fluorine-18 undergoes positron emission with a half-life of 1.10 x 102 minutes. If a patient is...

Fluorine-18 undergoes positron emission with a half-life of 1.10 x 102 minutes. If a patient is given a 248 mg dose for a PET scan, how long will it take for the amount of fluorine-18 to drop to 83 mg? (Assume that none of the fluorine is excreted from the body.)

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?

A process has realized that its clock is ahead by 10 minutes. Suggest a mechanism for...

A process has realized that its clock is ahead by 10 minutes. Suggest a mechanism for slowing down the clock and work out when its clock will read the correct time.

A nuclear medicine source made of 32P with half-life of 14.3 days emits beta particles at...

A nuclear medicine source made of 32P with half-life of 14.3 days emits beta particles at 0.70 MeV. Ten grams of 32P concentrate in a tiny tumor in the bladder after injection. The activity is initially 1.0 x 1010 Bq. Compute the dose (in units of Gy) delivered at the tumor two half-lives after injection. For a more accurate answer, you should integrate the dose rate over time as the source strength changes due to radioactive decay.

Question