Questions LLC
Login
or
Sign Up
Ask a New Question
Science
Chemistry
If it takes 45 days for 80.0 mg of a particular radioactive isotope to decay to 10.0 mg what is its half-life?
1 answer
80(1/2)^t = 10
(1/2)^t = 1/8
t = 3
so, 45 days is 3 half-lives
You can
ask a new question
or
answer this question
.
Similar Questions
If it takes 45 days for 80.0 mg of a particular radioactive isotope to decay to 10.0 mg what is its half-life?
Top answer:
To find the half-life of a radioactive isotope, you need to understand the concept of half-life. The
Read more.
Two different radioactive isotopes decay to 10% of their respective original amounts. Isotope A does this is 33 days, while
Top answer:
decaying to 10% takes log0.10/log0.5 = 3.32 half-lives So, A's half-life is 33/3.32 = 9.94 days B's
Read more.
The rate of decay is proportional to the mass for radioactive material. For a certain radioactive isotope, this rate of decay is
Top answer:
Steve ur a savage
Read more.
A radioactive isotope has a decay constant of 9.68E-03 /s. Calculate the time taken for three quarters of a sample of the
Top answer:
The decay constant, denoted by λ, is given as 9.68E-03 /s. The decay of a radioactive sample can be
Read more.
The half-life of a radioactive isotope is the amount of time it takes for a quantity
of radioactive material to decay to one-half
Top answer:
To determine the decay-rate parameter (λ) for Carbon-14 (C-14), we can use the formula for
Read more.
Geologist use the time it takes for a radioactive isotope to decay to have its original mass called a
Top answer:
half-life.
Read more.
Yttrium-90 is an important radioactive isotope used by doctors for cancer treatment. The isotope undergoes beta decay with a
Top answer:
1. Alpha particles are a poor choice because they have very little penetrating power. 2. Lead
Read more.
the longest lived radioactive isotope yet discovered is the beta-emitter tellurium-130.it has been determinded that it would
Top answer:
<sub>52</sub><sup>130</sup>Te ==> <sub>-1</sub><sup>o</sup>e + X The subscripts must add up and the
Read more.
Two Questions:
1) A certain radioactive isotope has leaked into a small stream. 100 days later after the leak 10% of the original
Top answer:
1. amountremaing=original(e^(.692*time/hslf) .1=1 e^ ( ) take ln of each side
Read more.
The exponential formula for the half-life of a radioactive isotope is
y=y0ekt, where y is the amount of the isotope remaining
Top answer:
divide by e^(kt) ... y / [e^(kt)] = y0
Read more.
Related Questions
An isotope of sodium has a half-life of 20 hours. Suppose an initial sample of this isotope has mass 10 grams. The amount of the
A half life of a certain radioactive is 36 days. An initial amount of the material has a mass of 487 kg. Write an exponential
The half-life of a certain radioactive material is 38 days. An initial amount of the material has a mass of 497 kg. Write an
In a lab experiment, the decay of a radioactive isotope is being observed. At the beginning of the first day of the experiment
Which of the following statements about radioactive dating is true?
a. Radioactive decay is the rate at which new atoms form. b.
What is the decay constant for a radioactive isotope which decreases to 34% of its original value in 2.48 hours?
Model radioactive decay using the notation
t = time (independent variable) r(t) = amount of particular radioactive isotope
Technetium-99m is a radioactive isotope commonly used in medicine as a radioactive tracer. A radioactive tracer is an isotope
a certain radioactive isotope has a half life of approx 1,300 years .
How many years to the nearest year would be required for a
A 10 kg quantity of a radioactive isotope decays to 3 kg after 17 years. Find the decay constant of the isotope.
