Nuclear Chemistry - Solving U-238 Activity & Decay Energy

AI Thread Summary
The discussion focuses on calculating the activity and decay energy of 1.00 mg of U-238, which decays into thorium-234. The initial attempt at solving the activity calculation was marked incorrect, prompting confusion regarding the methodology and the lack of units in the answers. Participants emphasize the importance of providing context and proper units for clarity in scientific calculations. Additionally, there is frustration over the unclear presentation of numbers and calculations. Accurate representation of data and adherence to scientific conventions are crucial for effective communication in nuclear chemistry.
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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
 
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You expect us to guess what you did and what are these numbers?

What if I will tell you that 1.521211? Does it make any sense without context?

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methods
 
=Borek;2727085]You expect us to guess what you did and what are these numbers?

What if I will tell you that 1.521211? Does it make any sense without context?

Agreed; your answers don't even have units.
 
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