how many gram of uranium will radiate the equivelent energy output of a major earthquake measuring 10^19J?

Energy from fission of uranimu 223 is 10^-12.

Is that 1E-12 J/atom or J/mol or J/gram or some other unit?

J/atom

1E-12 J/atom x (#atoms) = 1E19 J total.

Solve for # atoms.
(#atoms/6.02E23) = # moles U atoms
Convert moles to grams by g = moles x molar mass. This number appears to me to be too large so check my reasoning carefully.

To calculate the number of grams of uranium required to produce the equivalent energy output of a major earthquake measuring 10^19 Joules, we need to find the energy released per gram of uranium.

Given that the energy from the fission of uranium-223 is 10^-12 Joules per gram, we can set up a proportion to find the number of grams needed:

Energy released per gram of uranium = 10^-12 J/g
Energy output of earthquake = 10^19 J

Let x represent the number of grams of uranium needed. We can set up the proportion:

10^-12 J/g = 10^19 J / x

Now, we can solve for x:

x = (10^19 J) / (10^-12 J/g)
x = 10^31 g

Therefore, approximately 10^31 grams of uranium will radiate the equivalent energy output of a major earthquake measuring 10^19 Joules.