The half-life of a radioactive substance is 8.93 years. If 6 grams of the substance is present now, how much will be present in 15 years? Round to the nearest hundredth of a gram. Recall: Q(t) = Qoekt. Use the model Q(t) = Qoe-0.000121€ for radiocarbon dating. If a petrified bone is found to have 82% of the carbon-14 remaining, how old is the bone? Round to the nearest year.

Q: The decay equation for radon-222 gas is known tobe y = y0e^-0.18t, with t in days. About how long…

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Q: The half-life of strontium-90 is 28 years. How long will it take a 56 mg sample to decay to a mass…

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Q: A radioactive substance decays at a rate proportional to the amount present, and half the original…

A: given radioactive substance that its half life is 1500 years. we have to find time after which the…

Q: (a) A radioactive substance has a half-life of 20 years. If 8 mg of the substance remains afte 100…

A: We will use radioactive decay formula ..

Q: The half-life of Radium-226 is 10 years. How much of an initial 138 g sample will remain after 49…

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Q: The rate of decay of radium is said to be proportional to the amount of radium present. If the…

A: Given : S=the amount of radium you start with=250gm t=the amount of time in years=950 years  h=the…

Q: Suppose an Egyptian mummy is discovered in which the amount of carbon-14 present is only about…

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Q: If you start with 65 milligrams of Chromium 51, used to track red blood cells, which has a half-life…

A: N(t)=N0e-tln2h N0=Initial amountt=decay timeh=length of half life Initial amount= N0=65 milligrams…

Q: You have 10 ounces of a radioactive substance with a half-life of 5 hours. How long will it be until…

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Q: The amount remaining of a 162 mL sample of a liquid substance, y (in mg) afterx hours is modeled by…

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Q: You have 500-grams of an unknown radioactive substance that has been determined to decay according…

A: D(t) = 500e-0.001904.tLet substance take x years to become half of the initial ammount.After x years…

Q: The half-life of radium is approximately 1600 years. If the present amount of radium in a certain…

A: Consider the formula to find the remaining amount of radium.The half life, t(1/2) is 1600 yrs.The…

Q: The half-life of strontium-90 is 28 years. How long will it take a 40 mg sample to decay to a mass…

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Q: During a preliminary survey of an asteroid, chemical analysis indicated that a certain radioactive…

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Q: The radioactive Isotope of lead, Pb-209, decays at a rate proportional to the amount present at time…

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Q: Suppose $2000 is invested at 9% interest compounded continuously. How long will it take for the…

A: Given

Q: The half-life of Zn-71 is 2.4 minutes. If one had 135.0g at the beginning, how many grams would be…

A: We have to find

Q: The decay of 773 mg of an isotope is given by A(t)=773e^-0.023t, where t is time in years. Find the…

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Q: Suppose $2000 is invested at 7% interest compounded continuously. How long will it take for the…

A: Given query is to find the time taken to reach the investment of 2000 to 10000 if compounded…

Q: The half-life of a radioactive substance refers to the amount of time it will take for the quantity…

A: Given that: Half life of Q is: T=20 years In 2015 Initial amount: N0=100 g a). How much will be at…

Q: A sample from human remains found near Stonehenge in England shows that 71.2% of the carbon-14 still…

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Q: The half-life of radium is 1620 years. If a laboratory has 12g of radium, how long will it take…

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Q: At the beginning of an experiment, a scientist has 216 grams of radioactive goo. After 195 minutes,…

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Q: The half-life of strontium-90 is 28 years. How long will it take a 50-mg sample to decay to a mass…

A: Introduction: The half-life is the amount of time it takes for a quantity to decline to half its…

Q: The half-life of carbon-14 is 5,730 years. If there are 600 grams of carbon-14 in a tree when it is…

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Q: This exercise uses the radioactive decay model, The half-life of strontium-90 is 28 years. How long…

A: Use radioactive law

Q: The half-life of Carbon-14 is 7 years. How much of an initial 131 g sample will remain after 45…

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Q: How long does it take for 90% of a given quantity of the radioactive element cobalt-60 to decay,…

A: Radioactive element decay rate.

Q: Given that X ~ Exp(0.7), find the decay rate.

A: Given that X ~ Exp(0.7).

Q: Strontium-90 has a half-life of 29 years. If there are 400 grams of strontium initially, how much,…

A: Strontium-90 has a half-life of 29 years, there are 400 grams of strontium initially.

Q: Suppose you have 100g of Titanium-44, which has a half-life of 63 years. After how long will only 1g…

A: Initial amount=P=100  Half life= H= 63 years  Final amount= A= 1  Time= t years Using the half-life…

Q: A sample of bacteria is decaying according to a half-life model. If the sample begins with 500…

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Q: At the beginning of an experiment, a scientist has 228 grams of radioactive goo. After 135 minutes,…

A: Given that: P=the initial amount= 228 Time=t=135 minutes A=final amount= 3.5625 r=rate    Using the…

Q: The half - life of Cobalt - 60 is 15 years. How much of an initial 105 g sample will remain after 33

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Q: The half-life of Radium-226 is 14 years. How much of an initial 143 g sample will remain after 43…

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Q: Of an initial amount of 4000 g of lead-210, how much will remain in 190 years? Lead-210 decays at a…

A: Here initial amount A0=4000g Decaying rate λ= 3.15% = 0.0315 Let amount remains in 190 years= A(t)

Q: The half-life of strontium-90 is 28 years. How many years will it take a 56 mg sample to decay to a…

A: Given : Half -life of strontium-90 is 28 years . T1/2 = 28 years

Q: The half-life of a radioactive substance refers to the amount of time it will take for the quantity…

A:

Q: The half-life of strontium-90 is 28 years. How long will it take a 44 mg sample to decay to a mass…

A: We can solve this as follows:

Q: The rate of decay of radium is said to be proportional to the amount of radium present. If the…

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Q: The growth rate of a certain strain of bacteria is unknown, but assumed to be constant. When an…

A: Given that the bacteria is growing at a constant rate. Initially there were 1500 bacteria and after…

Q: determine how long it will take for 650 mg of a sample of chromium-51, which has a half life of…

A: Half Life-The half life of a substance is thetime taken for half of the substance tobreakdown or…

Q: A 50 mg sample of thorium-233 decays to 44 mg after 4 min. a) Determine the half-life of…

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Q: If Tabitha has $1000 to invest at 6% per annum compounded semi annually, how long will it be for her…

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Q: The half-life of plutonium-241 is approximately13 years.a. How much of a sample weighing 4 g will…

A: The half-life of plutonium-241 is 13 years. A(t)=A0e-k tA02=A0e-k×13…

Q: The half-life of strontium-90 is 28 years. How long will it take a 60 mg sample to decay to a mass…

A: This can be solved using the following way....

Q: Suppose $2000 is invested at 3% interest compounded continuously. How long will it take for the…

A: Initial amount = $2000Interest rate= 3% compounded continuously.=0.03 Future value= $8000

Q: Element X decays radioactively with a half life of 12 minutes. If there are 690 grams of Element X,…

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Q: The half-life of Cobalt-60 is 14 years. How much of an initial 107 g sample will remain after 27…

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Q: The radioactive isotope of lead, Pb-209, decays at a rate proportional to the amount present at time…

A: Given- Half life t12 =3.3 hours, Intial weight=1 gm. To find- The time in which the radioactive…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.