A typical smoke detector contains americium-241 (half-life = 432.7 years) with an activity of 1.0 microcurie....
A typical smoke detector contains americium-241 (half-life = 432.7 years) with an activity of 1.0 microcurie. What mass of americium-241 is present?
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A typical smoke detector contains americium-241 (half-life =
432.7 years) with an activity of 1.0 microcurie....
Americium-241 is widely used in smoke detectors. Calculate the amount of americium-241 consumed in a smoke...
Americium-241 is widely used in smoke detectors. Calculate the amount of americium-241 consumed in a smoke detector (initially containing 5.40 ug of Am) that has been used for one year if the half- life is 433 years.
Americium-241 is used in some smoke detectors. It is an alpha emitter with a half-life of...
Americium-241 is used in some smoke detectors. It is an alpha emitter with a half-life of 432 years. How long will it take in years for 44.0 % of an Am-241 sample to decay?
Americium-241 is used in some smoke detectors. It is an alpha emitter with a half-life of...
Americium-241 is used in some smoke detectors. It is an alpha emitter with a half-life of 432 years. How long will it take in years for 32.0 % of an Am-241 sample to decay? Express your answer numerically in years.
Americium-240 has a half-life of 2.12 days. (Can you see why americium-241 is used in smoke...
Americium-240 has a half-life of 2.12 days. (Can you see why americium-241 is used in smoke detectors rather than americium-240? See exercise 4.) How many hours does it take for 34.5% of a sample of americium-240 to decay? answer should be 31.1 hr
please help with number 6 12,35 5. The half-live of amerícium-241 is detector at the date...
please help with number 6
12,35 5. The half-live of amerícium-241 is detector at the date of manufacture, what mass of americium-241 is present After 1,000.0 y? g of americium-241 is present in a smoke .0o0l 6. If the half-life of tritium (hydrogen-3) is 12.3 y, how much of a o.00444 g sample of tritium is present afrsdy After 2500y? oExplain why the amount left after 1,0000 y in Exercise 7 is not one-tenth of the amount present after 100.0...
The isotope 241 95 Am is an alpha-particle emitter with a half-life of 432 years. (c) The activity of the 241 95 Am in a...
The isotope 241 95 Am is an alpha-particle emitter with a half-life of 432 years. (c) The activity of the 241 95 Am in a smoke detector is 1 µCi. How long will it take for the activity to drop to 0.9 µCi? (d) How many atoms of 241 95 Am have transmuted during the time for the activity to drop to 0.9 µCi? (e) Calculate the Q value in MeV for this α−decay of 241 95 Am. (f) Calculate...
What is the activity in microcuries??? Review Intelligent Tutoring Question 20.089 smoke detectors contain a small...
What is the activity in microcuries???
Review Intelligent Tutoring Question 20.089 smoke detectors contain a small amount of americium-241, which has a half-life of 1.70 × 105 days. Assume that the detector contains 0.20 mg of 241Am Part 1 Your answer is correct. What is the activity, in becquerels? 2.357E7 the tolerance is +/-590 Bq SHOW HINT SHOW SOLUTION LINK TO TEXT Attempts: 1 of 15 used ▼ Part 2 Your answer is incorrect. Try again. What is the activity...
Americium is used in household smoke detectors as a source of ? particles. The device actually...
Americium is used in household smoke detectors as a source of ? particles. The device actually responds to the presence of ions from a fire, rather than responding to smoke. A schematic is shown in the image. (Figure 1) The entire setup is enclosed in the familiar plastic housing. The 241Am, which is an ?-emitter, is encased in an aluminum container with an opening that aims the ? particles through an air gap between electrically charged plates. The ? particles...
A) You are using a Geiger counter to measure the activity of a radioactive substance over...
A) You are using a Geiger counter to measure the activity of a radioactive substance over the course of several minutes. If the reading of 400. counts has diminished to 100. counts after 48.2 minutes , what is the half-life of this substance? B) An unknown radioactive substance has a half-life of 3.20 hours . If 24.3 g of the substance is currently present, what mass A0 was present 8.00 hours ago? C) Americium-241 is used in some smoke detectors....
B) An unknown radioactive substance has a half-life of 3.20 hours. If 47.3 g of the...
B) An unknown radioactive substance has a half-life of 3.20 hours. If 47.3 g of the substance is currently present, what mass A0 was present 8.00 hours ago? Express your answer with the appropriate units. C) Americium-241 is used in some smoke detectors. It is an alpha emitter with a half-life of 432 years. How long will it take in years for 30.0 % of an Am-241 sample to decay? Express your answer with the appropriate units. D) A fossil...
Americium-241 is widely used in smoke detectors. Calculate the amount of americium-241 consumed in a smoke detector (initially containing 5.40 ug of Am) that has been used for one year if the half- life is 433 years.
please help with number 6
12,35 5. The half-live of amerícium-241 is detector at the date of manufacture, what mass of americium-241 is present After 1,000.0 y? g of americium-241 is present in a smoke .0o0l 6. If the half-life of tritium (hydrogen-3) is 12.3 y, how much of a o.00444 g sample of tritium is present afrsdy After 2500y? oExplain why the amount left after 1,0000 y in Exercise 7 is not one-tenth of the amount present after 100.0...
What is the activity in microcuries???
Review Intelligent Tutoring Question 20.089 smoke detectors contain a small amount of americium-241, which has a half-life of 1.70 × 105 days. Assume that the detector contains 0.20 mg of 241Am Part 1 Your answer is correct. What is the activity, in becquerels? 2.357E7 the tolerance is +/-590 Bq SHOW HINT SHOW SOLUTION LINK TO TEXT Attempts: 1 of 15 used ▼ Part 2 Your answer is incorrect. Try again. What is the activity...
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