Radioactive Decay A sample of bismuth-210 decayed to 33% of its original mass after 8 days. (a) Find the half-life of this element. (b) Find the mass remaining after 12 days.

Q: Population growth Growing from an initial population of 150,000 at a constant annual growth rate of…

A:

Q: Detennining Decay from Half-Life A cenain radioactive substance has a half-life of 5 hours. Find the…

A: By hay-site  , rate of decaycan be found out :0.5 = e5ren(0.5) = 5 rr = -0.139

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

A:

Q: Radioactive substance decay exponentially. For example, the amount of radium present at any time t…

A: Exponential decay formula: Q(t)=Q0e-kt Q0: Initial amount present k:specific constant

Q: Estimating the Date That a Prehistoric Man Died The bonesof a prehistoric man found in the desert of…

A: Bones of the prehistoric man contain 5% of original carbon14. The half life of carbon14 is 5730…

Q: Finding Half-Life If 250 mg of a radioactive element decays to 200 mg in 48 hours, find the…

A: Substitute m=200, m0=250, t= 48 and r=ln2h in mt=m0e-rt. mt=m0e-rt200=250e-48ln2h45=e-48ln2h

Q: After depositing an initial amount of $17,000 in an account that eams 7% interest compounded…

A: Given,Annual Rate of deposits=2800-400tInitial amount(P0)=$17,000Rate of interest,r=7%To find: a)…

Q: Uranium dating Uranium-238 (U-238) has a half-life of 4.5 billion years. Geologists find a rock…

A: Given: Half-life of Uranium is 4.5 billion years. 85% of the original Uranium-238 remains. To find:…

Q: Urine culture test is being conducted in the pathology lab from the sample of a patient to prescribe…

A: Urine culture test is being conducted in the pathology lab from the sample of a patient to prescribe…

Q: Radium Decay Radium decays at a r* <Jroportional tothe amount present and has a half-life of 1…

A: Given: Half-life = 1,600 years Number of years = 6,400 years

Q: After depositing an initial amount of $10,000 in a savings account that earns 4% interest compounded…

A:

Q: Topic : Growth and decay Sample "D" decays at a rate proportional to the amount present. If 35% of…

A: Given 35 % of the original amount dissipate in 100 days.  Now find the %lost in 160 days.

Q: A new liquid substance is developed at a lab. This new substance has a half-life of 16 hours, and we…

A: Given : The substance has a half-life of 16 hours, and we have 15 grams of it.

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

A: Given decay equation is A=16e-0.000121t. Given year is 5715 years. Consider t  = 5715.

Q: Carbon-14 is a radioactive element with a half-life of about 5,730 years. Carbon-14 is said to decay…

A: Given Information: The decay rate of carbon 14 = 0.000121

Q: Californium-254 has a half-life of 60 days. (a) A sample has a mass of 16 mg initially. Find a…

A:

Q: Radioactive Decay The radioisotope, Radium-226, has a half-life of 1600 years. Given an initial…

A:

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

A: Decay model

Q: Money is transferred continuously into an account at the constant rate of $800 per year. The account…

A: The deposited amount is $800/year

Q: Carbon 14 (14C) dating assumes that the carbon dioxide on Earth today has the same radioactive…

A: Let it was t years ago. And let there was x unit initially. So now there will be 23% of x= 0.23x…

Q: 1094 26. A pizza is removed from the oven at a temperature of 425 F. After 15 minutes, the pizza has…

A: 26. initial temperature a = 425 F time t = 15 minutes final temperature y= 200 F    exponential…

Q: Radioactive Decay Uranium-234 has a half-life of 2.7 X 10° years. (a) Find the amount remaining from…

A:

Q: 28. After 500 years, a sample of radium-226 has decayed to 80% of its original mass. Find the half-…

A: Let A is original amount, A=100% Given t =500 year, At= 80%A At=20% half life h=?

Q: Radioactive Decay The half-life of cobalt is 5.27 years. If100 grams of radioactive cobalt is…

A: So the fraction of cobalt let after t years is(1/2)^(t/5.27)so the amount of the 100g left after t…

Q: POPULATION A population is growing continuously at a rate of 3% If the population is now 5 million,…

A: If you like the solution then please give it a thumbs up.... The Answer is :                  P ≈…

Q: 7. Radium decomposes at a rate proportional to the amount present. A 300g of radium today will…

A:

Q: Carbon dating The half-life of C-14 is about 5730 yr.a. Archaeologists find a piece of cloth painted…

A: Carbon dating The half-life of C-14 is about 5730 yr. We have to answer the following... (a).…

Q: Investment A is currently worth $71,400 and is growing at the rate of 12% per year compounded…

A:

Q: Carbon 14 dating assumes that the carbon dioxide on Earth today has the same radioactive content as…

A: Given; Half life of 14C = 5715

Q: Radioactive elements decrease (or decay) exponentially. Suppose that 124 mg of an unknown…

A: Given query is to find the half life of the element.

Q: Doubling an Investment How long will it take for an invest- ment of $1000 to double in value if the…

A: P=1000,  r=8.5%=0.085

Q: Carbon 14 (14C) dating assumes that the carbon dioxide on Earth today has the same radioactive…

A: Given :- Carbon 14 C14 dating assumes that the carbon dioxide on Earth today has the same…

Q: Radium decomposed at a rate proportional to the quality of radium present. Suppose that it is found…

A:

Q: Carbon-14 Dating The burial cloth of an Egyptian mummy is estimated to contain 59% of the carbon-14…

A: Given :           The burial cloth of an Egyptian mummy is estimated to contain 59% of the…

Q: 4. Radium decomposes approximately at a rate proportional to the amount present. If it is 100 grams…

A: Given  at t=0, amount of radium = 100 grams and at t= 100 years, amount of radium = 96 grams.

Q: 8. Radium-226 has a half-life of 1600 years. Geologists find a rock and determine it contains 70% of…

A:

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

A:

Q: Future Value The future value of $2000 investedfor 3 years at rate r, compounded annually, is…

A: In the equation S=2000(1+r)3, S represents the future value and 2000 represents the initial amount…

Q: Population growth in India The 1985 population estimate for India was 766 million, and the…

A:

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: a grave in Egypt proved to have only 58% of the Carbon-14 of living tissue. The half-life of…

A: It is given that,  Seeds found in a grave in Egypt proved to have only 58% of the Carbon-14 of…

Q: Radiometric dating Researchers determine that a fossilized bone has 30% of the C-14 of a live bone.…

A: Formula for calculating the rate constant of a first order equation is given by - k =…

Q: Tests of a bone discovered in a dig at Saint Joseph’s University contained 27% its original amount…

A:

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

A: Here, given that  A=16e-0.000121t...(1) where A is the amount of Carbon-14 present after t years.

Q: II. Simple Chemical Conversion Radium decomposes at a rate proportional to the quantity of radium…

A: Given the data

Q: Uranium dating Uranium-238 (U-238) has a half-life of 4.5 billion years. Geologists find a rock…

A: Given: Half-life of Uranium-238 is 4.5 billion years 85% of the original Uranium-238 remains then,…

Q: POPULATION A population is growing continuously at a rate of 3% If the population is now 5 million,…

A: use population growth formula

Q: Carbon-14 is a radioactive element with a half-life of about 5,730 years. Carbon-14 is said to decay…

A:

Q: Radioactive Decay A sample of bismuth-210 decayed to33% of its original mass after 8 days.(a) Find…

A: To Determine: (a) Find the half-life of this element.(b) Find the mass remaining after 12 day Given:…