Sunday

April 20, 2014

April 20, 2014

Posted by **cam** on Monday, April 11, 2011 at 7:07pm.

- chemistry -
**DrBob222**, Monday, April 11, 2011 at 10:49pmPray tell what does caffeine have to do with tritium?

For tritium,

k = 0.693/t_{1/2}

You will need to look up the half-life of tritium unless that is the "caffeine" half-life.

Substitute k into the below equation.

ln(No/N) = kt

Nl = 125

N = 22

k = from above calculation.

t = time. Solve for this. Note that the unit for time and the unit for half-life must be the same.

**Related Questions**

Pre Calc! - A drug is eliminated from the body through urine. Suppose that for a...

Pre Calc! - A drug is eliminated from the body through urine. Suppose that for a...

math - 3. The half-life of a certain drug in the human body is 8 hours how long...

chemistry - If there are 80 milligrams of a radioactive element decays to 10 ...

algebra - half lives - Half-life of tritium is 12.32 years. Write decay equation...

math - A cup of brewed tea has 54 milligrams less caffeine than a cup of brewed ...

calculus - The treatment of a certain viral disease requires a combination dose ...

math - How do I set-up/solve this problem? Please help me. The half-life of the ...

calculus - How do I set-up/solve this problem? Please help me. The half-life of ...

algebra - using formula d(h)=8e^-0.4h to determine the milligrams d of a certain...