math/science
posted by kayla on .
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