1. The half-life of a radioactive material is 41.44 minutes. Starting with 840.7 grams of the sample, how much (in grams) will remains after 1.221 hours?

Q: Determine whether the following statement is true or false, and explain why. The half-life of a…

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Q: Element X decays radioactively with a half life of 11 minutes. If there are 300 grams of Element X,…

A: Given information: The half life h =11 min, there are 300g of element X. To find: The time it will…

Q: If there were originally 500 grams of carbon-14 originally, how much carbon-14 would remain after 10…

A: In each half life , amount becomes half of the previous one. It means that, after each half life the…

Q: Suppose that in​ 2008, 560,500 citizens died of a certain disease. Assuming the population of the…

A: Given: 560,500 people died out of 280,000,000 people. So the percentage of people who died is:…

Q: An element with mass 730 grams decays by 27.6% per minute. How much of the element is remaining…

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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: An element with mass 730 grams decays by 28.8% per minute. How much of the element is remaining…

A: There is an exponential decay with rate of 28.8%.

Q: Yttirum-90 has a half-life of 64.10 hours. Given an initial mass of 622 grams of the sample, how…

A: Given information Half life t12=64.10 hours And the initial mass m0=622 grams We have to find the…

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

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Q: If 8 g of a radioactive substance are present initially and 4yr later only 4.0g​ remain, how much of…

A: Initially 8 gm is present. After 4 yrs, 4 hm remained. To calculate after 9 yrs.

Q: If a sample of a certain solution is determined to have a H30*| concentration of 9.87 x 10-…

A: NOTE: Refresh your page if you can't see any equations. . here the given concentration is

Q: 1. The population of Kuhala Island doubles every 3 decades. 2. The amount of radioactive isotope of…

A: Whether each given is an exponential function, exponential equation, or exponential inequality or…

Q: The half-life of a radloactive Isotope Is the time It takes for a quantity of the isotope to be…

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Q: If the half-life of a radioactive substance is 7,600 years, then at what rate is it decaying? 1…

A: We can find the rate of decay as below.

Q: 1. Radium decomposes at a rate proportional to the amount present. In 100 yrs, 100 mg of radium…

A: Given that Radium decomposes at a rate proportional to the amount present. In 100 years, 100 mg of…

Q: 3. The half-life of sodium-25 is 1.0 minutes. a) Starting with 1.0 kg how much will remain after ½…

A: Half life is very significant for chemical substances, especially for nuclear substances. It informs…

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

A: use t half formula

Q: 1. If you have 100 grams of a radioactive isotope with a half-life of 10 years: a. How much of the…

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Q: 2. Suppose that we initially have 500 mg of a radio-active substance as sample. After a year, the…

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Q: Suppose a nuclear accident releases 50 kilograms of the element Cesium 137. If the half life of…

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Q: 4.) The half-life of strontium-90 is 28 years. Find the rate of decay. How long will it take a 50 mg…

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Q: IF 8G OF RADIOACTIVE SUBSTANCE ARE PRESENT INITIALLY AND 4 YR LATER ONLY 4G REMAIN HOW MUCH OF THE…

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Q: A sample of sheepskin parchment discovered by archaeologists had a C14-to-C12 ratio equal to 40% of…

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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: Hello! I need help with this particular question on my study guide. There is an attachment below.…

A: Here we use half-life to calculate the exponential decay:

Q: if 8 g of a radioactive substance are present initially and 4 yr later only 4 g remain, how much of…

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

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Q: The frozen remains of a young Incan womanwere discovered by archeologist Johan Reinhard on Mt.…

A: The standard exponential decaying model is given as y(t)=y0e-kt. To find the value of…

Q: If the half-life of a radioactive substance is 6,800 years, then at what rate is it decaying? (Hint:…

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Q: Complete the table shown to the right for the half-Kife of a certain radioactive substance.…

A: Consider the radioactive decay function, At=A0e-kt Where, At represents the amount of substance left…

Q: 2. Suppose a nuclear accident releases 50 kilograms of the element Cesium 137. If the half life of…

A: Given- Intial amount of Cesium-137 is 50 kg and half life is 30 years. To find- The amount after 30…

Q: If18 g of a radioactive substance are present initially and 4yr later only 9g​remain, how much of…

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Q: How many half lives must have passed for an isotope with a half life of 10 years to decay from 1600…

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Q: If the half-life of a radioactive substance is 6,700 years, then at what rate is it decaying? 1…

A: The decay law is given by, A(t)=A0e-kt Where, A0 is the amount at t=0. And, t1/2=ln2k

Q: An

A: Given,element with mass = 510 gramsdecay rate = 26.3% per minuteour aim is to find how much of the…

Q: Radium has a weight of 1.5 and a half life of 6 years. What is its weight after 3 years?

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Q: Strontium-90 is a radioactive isotope with a half-life of 29 years. Strontium-90 is a major…

A: The half-life , T12 , is calculated using the formula, T12=ln 2λ , where, λ is the decay constant.…

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: 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: Assume a quantity decreases by 7.5% in 5.3 hours. What is the half-life of the substance? hours

A: Calculating the half life of the substance using the given conditions

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: 22. The half-life of radium-226 is 1620 years. a) If the current mass of a sample is 100 grams, what…

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Q: 10. The mass of a radioactive substance is 1000mg and decreases by 7% per year. What is its mass…

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Q: The half-life of Carbon-14 is 7 years. How much of an initial 169 g sample will remain after 28…

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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: 1. The radioactive isotope hydrogen-3 has a half-life of 12.3 years. a. If a sample of 80 mg of…

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Q: The half-life of Plutonium-241 is 9 years. How much of an initial 159 g sample will remain after 38…

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

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Q: Assume a quantity decreases by 5.1% in 7.5 hours.What is the half-life of the substance?

A: Given:A quantity decreases by 5.1% in 7.5 hours.

Q: If 12 g of a radioactive substance are present initially and a 4 yr later only 6g remain, how much…

A: Given Total radioactive substance present   After four year only 6g remain