Answer to Question #42233 in Molecular Physics | Thermodynamics for David

Question #42233
PuO2 has a density of 11.5 gcm-3 and a specific heat capacity of 330 J kg-1 K-1
. A fresh sample (i.e. one that has not decayed) of PuO2 produces 0.540 kW kg-1 of heat due to internal radioactive decay*. For this question we will consider a 1 cm^3 block of PuO2.

a) How much heat does a fresh 1 cm^3 block of PuO2 produce?

A fresh 1 cm^3 block sitting on the bench in the lab glows red hot at 700 K as it looses heat to
its environment.

b) If we place the block, initially at 700K, in a very well insulated container, its temperature will
start to rise. How long does it take for the block to reach 1000 K?

c) PuO2 melts at 2673 K and its latent heat of fusion is 245 kJ kg-1. If we place our block in a well insulated and heat resistant container when it is at 700 K, then how long is it before the whole block is melted?
Expert's answer
The answer to the question is available in the PDF file

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!


No comments. Be first!

Leave a comment

Ask Your question

New on Blog