rof2 Question 13: The radioactive isotope Bismuth-210 has a half life of 5 days. How many days does it take for 87.5% of a given amount to decay? (a) 8 (b) 11 (c) 10 (d) 15 (e) 13

Q: An unknown radioactive element decays into non-radioactive substances. In 1000 days the…

A: Radioactive elements follow the law of natural decay. That means the rate of decay of a radioactive…

Q: Q7. A 150 grams of a radioactive gas is accumulated in a container. After 3 months, only 141 grams…

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Q: You create 400 kg of einsteinium-240*. Einsteinium-240 has a half-life of 6 seconds. That is, it…

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Q: The population

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Q: antity of U-232 remains after 30 yea

A: The quantity remains after 30 years is 75%. It is given that AA0=0.75 , t=30 years. The equation…

Q: 9. Radioactive Decay The half-life of radium is 1690 years. If 10 grams is present now, how much…

A: The half-life of any substance represents the time required by that substance to reduce to half of…

Q: Technetium-99m is used by doctors on patients when needing to x-ray and track organ function. It has…

A: Here, we use the formula , A=P12thwhere, A=remaining amount   P=original amount    t=elapsed time…

Q: An artifact originally had 16 grams of carbon-14 present. The decay model A = 16 e -0.000121t…

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Q: An artifact originally had 16 grams of carbon-14 present. The decay model A = 16 e -0.0001211…

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Q: Radium decompose in air at the rate proportional to the amount present. If initially there 20 grams,…

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Q: Strontium 90 (Sr-90), a radioactive isotope of strontium, is present in the fallout resulting from…

A: the amount decreases by (1/2)^nLwhere n is the number of half life yearsso ,(1/2)^n = 1/32solving…

Q: An artifact originally had 16 grams of carbon-14 present. The decay model A = 16 e -0.000121t…

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Q: The half - life of the radioactifive substance Carbon- 14 is approximately 5750 years. Suppose an…

A: Given that the half-life of the radioactive substance carbon-14 is approximately 5750 years. Suppose…

Q: A 3750-year-old wooden chest is found by archaeologists. What percentage of the original 14C would…

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Q: 3. The amount A, micrograms of a certain radioactive substance remaining after t years decreases…

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Q: The half-life of a radioactive kind of uranium is 2 years. If you start with 5,712 grams of it, how…

A: According to question given that The half life of a radioactive kind of uranium is = 2 years A0=5712…

Q: Twenty percent of a radioactive substance decays in ten years. By what percent does the substance…

A: We have to find the percent the substance decay each year.

Q: An artifact originally had 16 grams of carbon-14 present. The decay model A= 16 e-0.000 1211…

A: given  A=16e-0.000121t

Q: 6. A 200 g sample of polonium has a half-life of 40 days. This means that every 40 days, the amount…

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Q: . Radioactive Radon After 3 days a sample of radon-222 has decayed to 58% of its original amount.…

A: Given, mass of radon-222 decayed 58% of original amount m(t)=m(3)=0.58m0 0.58m0=m0e3ke3k=0.58 take…

Q: 18. The half-life of radioactive Mathium is 21.77 years. What percent of a present amount will…

A: Given : Half - life of radioactive Mathium is 21.77 years.

Q: An unknown radioactive element decays into non- radioactive substances. In 320 days the…

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Q: Q1) A radioactive isotope has a half-life of 16 days. You wish to have 30 g at the end of 30 days.…

A: Using the radio-active decay formula, it can be written that Nt=N012tt12 , where , N0 is the initial…

Q: 10. You have 20 grams of phosphorus that decays 5% per day. How long does it take for it to be 10 g?

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Q: Radium decomposes at a rate proportional to the amount present. In 100 years, 100 mg of radium is…

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Q: Use r=-0.00012097 A papyrus scroll from ancient Egypt was written 4,800 years ago. To the nearest…

A: Given r=-0.00012097 (a) Given that the age of papyrus scroll is t=4800 years. Thus, the equation is…

Q: The half-life of radioactive strontium-90 is approximately 31 years. In 1963, radioactive…

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Q: 2 yeas ago there was 9 grams of radioactive substance. Currently, there are only 4 grams.  1) How…

A: Given problem is : 2 yeas ago there was 9 grams of radioactive substance. Currently, there are only…

Q: An unknown radioactive element decays into non-radioactive substances. In 260 days the radioactivity…

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Q: 20. The population of a small town is 1600 and is increasing at a rate of 3% per year. What will the…

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Q: After 15 years, one fourth of the initial mass of radioactive substance has decayed. a) Find the…

A: The given problem is to find the half life and percentage loss in the 90 years for the given radio…

Q: 22)  A linen artifact found in a crypt contains 95 percent of the carbon-14 that is present in…

A: Given that: Half life of carbon=5730 yearsPercentage of carbon present=95%

Q: A radioactive substance decays by 0.2% each year. a) If you started with 90mg of this substance, how…

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Q: An unknown radioactive element decays into non-radioactive substances. In 420 days the radioactivity…

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Q: Q5: A sample contains 1 gram of Radium. Will more than 0.5 gram of Radium remain after 1000 year?…

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Q: Cesium-137 has a half-life of approximately 30 years. How much of a 40-gram sample would be left…

A: The exponential decay function is given by P = P0·ek·t where t = time in years P = the amount of…

Q: Exponential decay occurs when 0 < r < 1 If P = (625)(.8)t, then find P0 = _________ P1 = _________…

A: Given: P=6250.8t   Calculate P0. Substitute 0 for t in the above equation. P0=6250.80=6251=625…

Q: (5) Radioactive decay is measured in terms of "half-life", which is the number of years required for…

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Q: The radioactive isotope of potassium **K which is used in the diagnosis of brain tumors, has a…

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Q: Radon-222 has a half-life of 4.00 days. Given its mass 5.488 gram at a certain time, what was the…

A: Given that, Radon-222 has a half-life of 4.00 days. Given its mass 5.488 gram at a certain time We…

Q: Element X decays radioactively with a half life of 8 minutes. If there are 460 grams of Element X,…

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Q: Radioactive isotope Palyium-2021 decays at a rate proportional to the amount present. If the…

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Q: 3. An isotope of sodium, Na - 24, has a half-life of 15 hours. A sample contains 42.8 grams of…

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Q: An unknown radioactive element decays into non-radioactive substances. In 700 days the radioactivity…

A: An unknown radioactive element decays into non radioactive substances. In 700 days, the…

Q: You create 400 kg of einsteinium-240*.  Einsteinium-240 has a half-life of 6 seconds.  That is, it…

A: Given data- The initial amount of material R0= 400 kg and it decays by 50% every 6 second. We have…

Q: An unknown radioactive element decays into non-radioactive substances. In 840 days the radioactivity…

A: Given: An unknown radio active element decays into non-radio active substances. In 840 days the…

Q: 6. A 40mg sample of a radioactive isotope decays to 30mg in 6.0 hours. Determine its half life, to 2…

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Q: 21. Strontium-87 is used in the study of bones. After one hour, 78.1 mg remains of a 100 What is the…

A: Radioactive decay follows the first-order kinetics. To calculate the half-life of Strontium-87 first…

Q: An unknown radioactive element decays into non- radioactive substances. In 540 days the…

A: 1) The half life equation is P(t) = P (0)*(0.5)t/H   P(t) is the quantity at time t (proportional to…

Matrices

‘Matrices’ is the plural form of the word matrix, and it is basically a spreadsheet in the form of a box. In mathematics, various functions can be carried out with matrices. Generally, a matrix comes in the shape of a square or rectangle. The elements are distributed horizontally in the form of rows, and vertically in the form of columns.