Wednesday

September 3, 2014

September 3, 2014

Posted by **ARIANA** on Wednesday, March 14, 2012 at 11:32pm.

Please help. I do not know how to do this question.

- CHEM -
**DrBob222**, Wednesday, March 14, 2012 at 11:55pmk = 0.693/t

_{1/2}

Calculate k and substitute into the equation below.

ln(No/N) = kt

For No use 1000 g

For N use .001 g

k from above.

Solve for t in years.

**Answer this Question**

**Related Questions**

calculus - Question: "Plutonium isotope Pu-239 has a half-life of 24,100 years. ...

s103 - the isotope caesium -137, which has a half life of 30 years, is a product...

chemistry - Any help with the following questions would be greatly appreciated! ...

Chemistry - The most abundant isotope of uranium,238U , does not undergo fission...

math - The fuel rods for a certain type of nuclear reactor are bundled into a ...

Chemistry - Gallium65, a radioactive isotope of gallium, decays by first order-...

Math - _The_Natural_Base_e_ An accident in 1986 at the Chernobyl nuculear plant ...

Maths - The fuel rods for a certain type of nuclear reactor are bundled into a ...

Physics check - A certain radioactive isotope has a half-life of one hour. At ...

Gen Chem - Neptunium-239 has a half-life of 2.35 days. How many days must elapse...