math/science
posted by kayla .
1) Nobelium has a halflife 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 halflife?

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 
is the second one 10 minutes?

i don't understand the first ine still. I got 6 but that does not make any sense at all
Respond to this Question
Similar Questions

Math
My watch is 1 second fast each hour, and my friend's is 1.5 seconds slow each hour. Right now they show the same time. When will they show the same time again? 
science/math
1) Nobelium has a halflife of 1 hour. If you start with 1 kg, how much will you have by this time tomorrow? 
The Simpsons
I don't have DVDs of simpsons shows from Season 10, and I can't watch the full episode on YouTube. Is there a website that has the descriptions of the entire Simpsons family and their satirical characteristics throughout the Episode, … 
chemistry
if you start with 100mg of radioactive material that has a half life of one hour, how many mg's of radioactive material would you have in 10.2284952 hours? 
physical science
A certain radioactive substance has a halflife of 1 hour. If you start with 1 gram of the material at noon, how much will be left at 3:00 P.M.? 
English
I left out the following sentences. Thank you very much. 1) In each episode there was a flashback, which showed what the characters were doing before the crash. Through the flashbacks the audience learned more about the characters … 
English
I included the sentences I was most doubtful about. Thank you. 1) In each episode there was a flashback, which showed what the characters were doing before the crash. Through the flashbacks (? 
Chemistry
Uranium238 has half life of 4.51 * 10^9 years Uranium234 has half life of 2.48 * 10^5 years Thorium230 has half life of 8.0 * 10^4 years Radium226 has half life of 1.62 * 10^3 years Lead210 has half life of 20.4 years. The rate … 
math
7. A watch that loses a halfminute every hour was set to read the correct time at 05 45h on Monday. Determiner the time, in the 12hour system, the watch will show on the following Friday at 19 45h. 
physics
If the physical halflife of sulfur35 is 87.1 days, and the biologic halflife in the testicle is 632 days, what is its effective halflife in this organ?