Thursday

October 23, 2014

October 23, 2014

Posted by **Jannet** on Monday, April 21, 2014 at 5:15pm.

- Radioactivity or science -
**DrBob222**, Monday, April 21, 2014 at 6:01pmk = 0.693/t

_{1/2}

Then

ln(No/N) = kt

No = 120 ug

N = solve for this

k = from above

t = 120 sec.

**Answer this Question**

**Related Questions**

Radioactivity - How are the terms "activity" and "becquerel" related? A ...

isd muscat - after two hours 1/16th of the radioactive isotope remains undecayed...

Half-life - After two hours, 1/16 of the initial amount of a radioactive isotope...

chemistry - A radioactive sample contains 2.45 g of an isotope with a half-life...

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

chemistry - A radioactive sample contains 2.45g of an isotope wiht a half life ...

Physics - A certian radioactive isotope has a half-life of 1 hour. If you start ...

physics - in an initial mass of 40g, how much mass Remaining of the Isotope ...

Chemistry - If a 100.0 gram sample of a radioactive isotope goes through three ...

Physcis 30 - Q1) If there are 100 radioactive atoms with a half-life of 30 ...