Posted by **RC** on Monday, October 12, 2009 at 12:03pm.

An Initial amount of 100 grams of Thorium-234 decays according to the model: dP/dt=-0.02828P (where t is measured in years).

a) Find the equation for the amount of Thorium left after t years.

b) Determine the half-life of this radioactive isotope

c) How long will it take for the sample to reduce to 25 grams?

## Answer This Question

## Related Questions

- math - The mass m(t) remaining after t days from a 70 g sample of thorium-234 is...
- algebra - A radioactive substance decays according to the formula A=A0e^kt where...
- calculus - The rate at which an amount of a radioactive substance decays is ...
- Calculus - The radioactive element polonium decays according to the law given ...
- physics - a uranium-238 nucleus may stay in one piece for billions of years, but...
- Math - Suppose that a certain material has a half life of 25 years, and there ...
- CALCULUS - A smoke detector contains 0.2 mg of Americium 241 (Am-241), a ...
- Calculus - A smoke detector contains 0.2 mg of Americium 241 (Am-241), a ...
- Calculus - A smoke detector contains 0.2 mg of Americium 241 (Am-241), a ...
- A.P. Chemistry - Thorium-232 undergoes alpha decay and has a half-life of 1.4 * ...

More Related Questions