A sample of 400g of radioactive lead-210 decays to polonium-210 according to the function A(t)=400e−0.032t, where t is time in years. Find the amount of radioactive lead remaining after (a) 4 yr, (b) 6 yr, (c) 15yr. (d) Find the half-life.
A sample of 400g of radioactive lead-210 decays to polonium-210 according to the function A(t)=400e−0.032t, where...
Radioactive bismuth, Bi-210 (half-life of 5.0 days), decays to polonium, Po-210. Radioactive Po-210 (halflife of 138 days) decays to stable lead, Pb-206. a) Draw the decay scheme for Bi-210 to Po-210. b) Draw the decay scheme for Po-210 to Pb-206. c) If you start with 5.0 X 10-3 Ci of pure Bi-210, calculate the activity of Bi-210 and Po-210 after 30 days.
Polonium-210, 210Po, decays to lead-206, 206Pb, by alpha emission according to the equation 210 Po 206Pb + He 84 If the half-life, t 112, of 210 Po is 138.4 days, calculate the mass of 206 Pb produced from a 562.0 mg sample of polonium(IV) chloride, PoC14, that is left untouched for 334.1 days. Assume that the only polonium isotope present in the sample is the 210 Po isotope. The isotopic molar masses of 210 Po is 209.98 g/mol and 206Pb...
Find the half-life of a radioactive element, which decays according to the function A(t)=A0e−0.0372t, where t is the time in years.
A radioactive element decays according to the function y=y0 e −0.0307t, where t is the time in years. If an initial sample contains y0 = 8 grams of the element, how many grams will be present after 20 years? What is the half-life of this element?
An initial amount of 100 g of the radioactive isotope thorium-234 decays according to Q(t) = 100e -0.02828t where t is in years. How long before half of the initial amount has disintegrated? This time is called the half-life of this isotope. (Round your answer to one decimal place.) yr
Strontium 90 is a radioactive material that decays according to the function A()-A 00244t, where Ao is the initial amount time t (n years). Assume that a scientist has a sample of 500 grams of strontium 90 (a) What is the decay rate of strontium 90? (b) How much strontium 90 is left after 10 years? (c) When will only 400 grams of strontium 90 be left? (d) What is the half-life of strontium 902 (a) What is the decay...
How long will it take a sample of radioactive substance to decay to half of its original amount, if it decays according to the function A(t) = 250e - 223, where t is the time in years? Round your answer to the nearest hundredth year. A) 3.11 yr B) 55.75 yr 24.76 yr D) 27.87 yr
Please slove both, will give upvote.
Find the natue of a radioactive element, which decays according to the function A) - Age where is the time in years The half life of the element is years (Round to the nearest tenth) The amount of carbon 14 present in a paint after years is given by y = y, e d . The paint contains 27% of its carbon-14. How old are the paintings? The age of the paintings is (Round...
Radioactive substance decays so that after t years, the amount remaining, expressed as a percent of the original amount, is A(t)=100(1.6)^(-t). a) Determine the function A’, which represent the rate of decay of the substance. b) what is the half-life for this substance? c) what is the rate of decay when half the substance has decayed?
Radioactive Decay - Half-life and Activity 1 Radioactive decay - Half-life Time 0 1000 21 31 750 N 1.000.000 500,000 250,000 125,000 62,500 31.250 15.625 7813 3.506 1.953 977 51 6 500 7 BI . 101 250 125 0 tie 21.234.41516171819, 1012 Time in multiples of A radioactive sample's half-life is 30.2 years. 1 year = 365 days, 1 day = 24 hours, 1 hour - 60 minutes, 1 minute = 60 seconds (a) Find its decay constant in year...