Suppose that Woosterium-21 is a radioactive substance that has a half-life of 3 hours. (Woosterium-21 does not, as far as I know, exist in real life.) Suppose the initial amount of Woosterium-21 is 100 mg. How much Woosterium-21 remains after 10 hours? Round your answer to three decimal places. (Enter only a number. Do not include units.)

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

A: Solution

Q: A radioactive substance has a half-life of 1620 years. if its mass is now 15 grams, how much will be…

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Q: In the early 1960s, radioactive strontium-90 was released during atmospheric testing of nuclear…

A: the radioactive decay is a continuous process. Therefore, A=A0ert where A is the amount remaining,…

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: Suppose you have a cache of radium, which has a half-life of approximately 1590 years. How long…

A: Given: Half-life of radium = 1590 years To find: Time taken to disappear 1/4 of the radium. Formula…

Q: Suppose that the parents of a child will need $95000 in 13 years for college expenses, and that the…

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Q: 3. How long will it take $5000 to triple if it is invested at 7.5% compounded continuously?

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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: Suppose a sample of a certain substance decayed to 69.2% of its original amount after 300 days. What…

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Q: 11) The half-life of silicon-32 is 710 years. If 30 grams is present now, how much will be present…

A: Given data : Ao=30 gmp =710 years t= 300 yearsLet "A" be the amount after 300 yearsA=?

Q: Suppose you have a cache of radium, which has a half-life of approximately 1590 years. How long…

A: Given that Half life of radium is 1590 years To find How long would you have to wait for 1/8 of it…

Q: A certain hermit wants to design a reactor using radioactive material A that will be converted into…

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Q: The half-life of Uranium-238 is approximately 4.5(10°) years. How much of a 10 kilogram block of U–…

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Q: The half-life of polonium is 139 days, but your sample will not be useful to you after 94% of the…

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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: 27. How long will it take money to double if it invested at 6% compounded monthly? 9% compounded…

A: If P=initial investment, r = interest rate compounded monthly  and A= amount after t years , then we…

Q: How long (in years) will it take a $300 investment to be worth $400 if it is continuously compounded…

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Q: At the end of 8 years, Alex would have $7,340.73 in his savings account if he invested his money at…

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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: How many years will it take $3,000 to grow to $5,000 if it is invested at 3.25% compounded…

A: To solve this problem we need to use the following result:

Q: If 525 mg of a radioactive element decays to 450 mg in 48 hours, what is its half-life?

A: we are using model for radioactive decayN=N0e-λtwhereN0=initial amountN=The amount test of a…

Q: How many years will it take $9,000 to grow to $17,200 if it is invested at 2.75% compounded…

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Q: The half-life of radium-225 is approximately 14.9 days. How much of a 15 gram sample of radium-225…

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Q: How long will it take for $8400 to grow to $14,600 at an interest rate of 9.4% if the interest is…

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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: The half-life of radium-226 is approximately 1620years.a. How much of a sample weighing 4 g will…

A: For a radioactive material, we have N(t)=N012tt1/2 Where N(t)=quantity of the material remaining.…

Q: At the end of 8 years, Alex would have $7,340.73 in his savings account if he invested his money at…

A:

Q: The half life of a decaying substance is the amount of time it takes for the substance to reduced to…

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Q: If 16% of a radioactive substance decays in 14 hours, what is the half-life of the substance? Round…

A: Consider the formula for the decay of the radioactive substance. Find the value for A(t) at t = 14…

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

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Q: How long will it take a $500 investment to be worth $700 if it is continuously compounded at 10% per…

A:

Q: 1. Strontium-90, 90Sr, has a half-life of 29 years. a) If 42.5 grams remain after 50 years, what is…

A: The formula for the quantity remaining of a substance after t years is: Nt=N012tt12 Here, t12=…

Q: Radium decomposes at a rate proportional to the amount present. If 100 milligrams of Radium at…

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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: Assume a substance has a half-life of 11 years and the initial amount is 133 grams.How long will it…

A: If A0 is initial amount present and T is half -life of the substance. Then the amount of substance…

Q: How long will it take a $700 investment to be worth $1300 if it is continuously compounded at 10%…

A: If P is the principal, r=rate of interest, t= time in years, hen , amount is given by

Q: Solve the problem. 3) The half-life of silicon-32 is 710 years. If 20 grams is present now, how much…

A: The half-life of silicon-32 is 710 years. If 20 grams is present now, how much will be present in…

Q: The half-life of radium-225 is approximately 14.9 days. How much of a 15 gram sample of radium-225…

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Q: The half-life of Radium-226 is 1590 years. a) If a sample contains 200 mg, how many mg will remain…

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Q: A substance decays according to the formula Q = 72(0.5)*, where t is in hours. (a) What is its…

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Q: A sample of radium has a weight of 1.5mg and a half-life of approximately 6 years how much of the…

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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 you have a cache of radium, which has a half-life of approximately 1590 years. How long…

A: The radioactive decay is modelled using the equation, N(t)=N0e-kt. Here, N(t) is the amount of…

Q: Suppose you have a cache of radium, which has a half-life of approximately 1590 years. How long…

A: Given, you have a cache of radium, which has a half-life of approximately 1590 years.

Q: The half life of a decaying substance is the amount of time it take for the substance to reduced to…

A:

Q: The half life of a decaying substance is the amount of time it takes for the substance to reduced to…

A: Let us assume it takes n half-lifes to reach 10mg

Q: How long (in years) will it take a $900 investment to be worth $1000 if it is continuously…

A: Amount = $1000 Principal=$900 Interest rate = 8%

Q: Element X decays radioactively with a half life of 8 minutes.If there are 980 grams of Element X,…

A: We have to find the time