Posted by **kayla** on Thursday, November 13, 2008 at 7:32pm.

1) Nobelium has a half-life of 1 hour. If you start with 1 kg, how much will you have by this time tomorrow?

2) You have 90 g of Lawrencium. You step away to watch one episode of "everybody loves raymond." when you return to your scientific studies, you only have 0.088g of lawrencium. what is its half-life?

- math/science -
**drwls**, Thursday, November 13, 2008 at 8:15pm
1) 1 kg * (1/2)^24

2. .088/90 = (1/2)^(t/T)

t is the length of an episode of that programm (30 minutes?). T is the half life of the isotope. Solve for T

- math/science -
**kayla**, Thursday, November 13, 2008 at 8:28pm
is the second one 10 minutes?

- math/science -
**kayla**, Thursday, November 13, 2008 at 8:30pm
i dont understand the first ine still. I got 6 but that does not make any sense at all

## Answer This Question

## Related Questions

- science/math - 1) Nobelium has a half-life of 1 hour. If you start with 1 kg, ...
- physics - If the physical half-life of sulfur-35 is 87.1 days, and the biologic...
- physical science - A certain radioactive substance has a half-life of 1 hour. If...
- Chemistry - Uranium-238 has half life of 4.51 * 10^9 years Uranium-234 has half ...
- chem - The half-life of the Nobelium isotope No^257 is about 23 seconds. 644 ...
- math - Two students, Mary and John, play a game. Each time Mary passes “start” ...
- life science - I cant grasp half life - the study guide question is how is half ...
- 2nd Semester - 2nd Semester begins tomorrow and I won't be having art anymore I...
- Chemistry - The half-life of iodine -131 is 16 days. If you start with 100 gram ...
- U.S. Government - How is the American Government Organized and their functions...

More Related Questions