Thursday

March 5, 2015

March 5, 2015

Posted by **Monique** on Saturday, November 26, 2011 at 11:38am.

please explain

- chemistry -
**DrBob222**, Saturday, November 26, 2011 at 12:58pmk = 0.693/t

_{1/2}

Solve for t_{1/2}and substitute into the equation below.

ln(No/N) = kt

No = starting grams = 2.45 g

N = ending amount. Solve for this.

k = from above calculation.

t = 11.5 days.

- chemistry -
**Anonymous**, Thursday, March 7, 2013 at 6:03am0.30625

**Answer this Question**

**Related Questions**

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

Pre-Calc - A radioactive isotope has a half life of 8.1 days. If the sample ...

Physics 30 - The activity of a sample of a radioactive isotope is 1800Bq. If ...

chemistry - How do you find the half-life of an element? Please explain and show...

Chemistry - Iodine 131 is a radioactive isotope. After 4.00 days, 70.8% of a ...

Algebra - Two different radioactive isotopes decay to 10% of their respective ...

chemistry - isotope chromium -51 has a half life of 28 days. If the original ...

chemistry - The half-life of I-131 is 8.00 days. If a medical treatment involves...

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

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