- #1
disneychannel
- 52
- 0
Homework Statement
Consider 238U which undergoes natural radioactive decay to form thorium-234
a)What is the activity, in curies, of 1.00 mg of U-238?
B)What is the energy in kilojoules associated wuth the decay of 1.00 mg of 238U? The nuvlear mass of throium-235 is 234.0437
Homework Equations
The Attempt at a Solution
A0
0.693/(1.62*105)
=4.27*10-6 j/k
1*10-3*(1/238 g)*(6.022*1023/1 mol)
=2.53*108
my teacher marked this wrong, i don't know why!
B)E=0.0449(9*1010)
m=(234.0437+4.00150)-238=239.93558