Question

A 1.6 mg sample of radioactive Ho-166 has a half-life of 26.8 years. What mass remains...

A 1.6 mg sample of radioactive Ho-166 has a half-life of 26.8 years. What mass remains after 12 years?
All radioactive decay processes are 1st order reactions. t1/2 = 0.693/k
ln [A]t = -kt + ln [A
0 0
Add a comment Improve this question Transcribed image text
Request Professional Answer

Request Answer!

We need at least 10 more requests to produce the answer.

0 / 10 have requested this problem solution

The more requests, the faster the answer.

Request! (Login Required)


All students who have requested the answer will be notified once they are available.
Know the answer?
Add Answer to:
A 1.6 mg sample of radioactive Ho-166 has a half-life of 26.8 years. What mass remains...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Similar Homework Help Questions
  • The half-life for the process 238U→206Pb is 4.5×109yr. A mineral sample contains 61.0 mg of 238U...

    The half-life for the process 238U→206Pb is 4.5×109yr. A mineral sample contains 61.0 mg of 238U and 14.5 mg of 206Pb. What is the age of the mineral? To calculate the age of the mineral, begin by rearranging the first-order relationship between the half-life, t1/2, and the decay constant to solve for the decay constant, k. k=0.693/t1/2 Then, use the following formula to solve for the age of the mineral, t: t=−1klnNtN0 where N0 is the original amount of 238U...

  • Review | Constants Periodic Table In the parts that follow, use the following abbreviations for time...

    Review | Constants Periodic Table In the parts that follow, use the following abbreviations for time If a substance is radioactive, this means that the nucleus is unstable and will therefore decay by any number of processes (alpha decay, beta decay, etc.). The decay of radioactive elements follows first-order kinetics. Therefore, the rate of decay can be described by the same integrated rate equations and half-life equations that are used to describe the rate of first-order chemical reactions: Measure of...

  • The half-life for the radioactive decay of C-14 is 5730 years. If a sample of C-14...

    The half-life for the radioactive decay of C-14 is 5730 years. If a sample of C-14 initially contains 1.6 mmol of C-14, how many millimoles will be left after 2250 years?

  • 9. [-14 Points] DETAILS SPRECALC7 4.6.017. This exercise uses the radioactive decay model. The half-life of...

    9. [-14 Points] DETAILS SPRECALC7 4.6.017. This exercise uses the radioactive decay model. The half-life of radium-226 is 1600 years. Suppose we have a 28-mg sample. (a) Find a function m(t) = moz-th that models the mass remaining after t years. m(t) = (b) Find a function m(t) = moet that models the mass remaining after t years. (Round your value to six decimal places.) m(L) = (c) How much of the sample will remain after 2500 years? (Round your...

  • a)For a first order decay of [A], if 188 mg remains of an initial sample of...

    a)For a first order decay of [A], if 188 mg remains of an initial sample of 1.3737 g after 516 min, what is the half life (in minutes)? b)The decay of carbon-14 is first order with a half life is 5576 years. How much of 1.4376 g sample would remain after 9190 years? c)The decay of cesium-135 is first order with a half life is 3.0 million years. How long (in years) would it take for a 0.9798 g sample...

  • Question An Allegra-D solution containing 180 mg/10 mL has a half-life in plasma of 14.6 hours....

    Question An Allegra-D solution containing 180 mg/10 mL has a half-life in plasma of 14.6 hours. Assuming the drug is eliminated from plasma through a first-order linear process, what concentration will remain after 9.5 hours? Equations t1/2 = 0.693/k In[Alt - In[Al. =-kt

  • If a sample of C-14 initially contains 1.7 mmol of C-14, how many millimoles will be...

    If a sample of C-14 initially contains 1.7 mmol of C-14, how many millimoles will be left after 2260 years? The half-life for the radioactive decay of C-14C-14 is 5730 years. Part A Part complete How long will it take for 25% of the C-14C-14 atoms in a sample of C-14C-14 to decay? Express your answer using two significant figures. View Available Hint(s) tt = 2400 yearsyears SubmitPrevious Answers Correct First, the rate (or decay) constant, kk, for the first-order...

  • The radioactive isotope thorium 234 has a half-life of approximately 578 hours. (a) If a sample...

    The radioactive isotope thorium 234 has a half-life of approximately 578 hours. (a) If a sample has a mass of 67 milligrams, find an expression for the mass after t hours. Q(t) = 67e-0.0011997 (b) How much will remain after 85 hours? (Round your answer to one decimal place.) 60.5 mg (c) When will the initial mass decay to 20 milligrams? (Round your answer to one decimal place.) 1008.3 x hr

  • the half life for radioactive decay (a first order process) of plutonium- 239 is 240,000 years....

    the half life for radioactive decay (a first order process) of plutonium- 239 is 240,000 years. How many years does it take for one mole of this radioactive material decay until just one atom remains?

  • If a radioactive isotope has half-life h, then the number of atoms in a sample is...

    If a radioactive isotope has half-life h, then the number of atoms in a sample is given by a(t)=a-2-/h where ao gives the number of atoms in the sample at time 0. The radio active decay of carbon-14 leads to clever way of determining the age of fossils and remnants of plants and animals. When an organism dies, the radioactive carbon- 14 in it decays, with half of it gone in 5,730 years. a. Suppose a mummified cat has a...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT