Questions LLC
Login
or
Sign Up
Ask a New Question
Science
Chemistry
Radioactive Decay
Assume the half-life of a substance is 31 days and the initial amount is 172.799999999996 grams.When will the substance be reduced to 3.2 grams?
1 answer
The substance will be reduced to 3.2 grams after approximately 4.5 half-lives, or 138.5 days.
You can
ask a new question
or
answer this question
.
Related Questions
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
Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this substance are present initially, find the amount Q(t)
If you have 10,000 grams of a substance that decays with a half-life of 14 days, then how much will you have after 70 days?
Show
a certain radioactive substance is decaying so that at time t, measured in years, the amount of the substance, in grams, is
A radioactive substance decays according to the formula A=A0e^kt
where A0 is the initial amount of substance (in grams) A is the
Radioactive substance decays so that after t years, the amount remaining, expressed as a percent of the original amount, is
A sample of a radioactive substance decayed to 94.5% of its original amount after a year. (Round your answers to two decimal
There are 5g of 131I left after 40.35 days. How many grams were in the original sample if its half-life is 8.07 days?
What is the
The amount remaining of a radioactive substance after t hours is given by
A(t) = 100ekt. After 12 hours, the initial amount has