How Does Uranium Decay Impact the Temperature of Surrounding Lead?

[Zoey Brown]

1. The
Lead is the final decay product of uranium-238 (half life = 4.7 billion years), so often the

uranium is embedded in lead. The decay of 1.00 g of uranium to thorium converts

6.83x10-8 kg of mass to energy. Assuming the uranium absorbs none of the heat, what

would be the temperature change of 120.0 kg of lead surrounding 1.00 g of uranium after

3.8 million years?

Homework Equations

e=mc^2
mf=mi(0.5)^t/h

The Attempt at a Solution

i got a really unreasonable answer; 394 035 degrees celsius

 

[phinds]

i got a really unreasonable answer; 394 035 degrees celsius

Be helpful if you showed HOW you got that result.