# Chemistry

posted by .

How much energy is emitted in each α decay of plutonium-234? (234Pu, 234.0433mu; 230U, 230.0339mu; 4He = 4.0026 mu).

I tried finding the difference in mass first:

(230.0339 + 4.0026) - (234.0433) = -.0068 mu

I then converted from amu to kg by multiplying by 1.6605E-27. Then (using E=mc^2) i multiplied by (3E8)^2 to get 1.016E-12 J

to find how many J are emitted per decay I multiplied the above by (1E-3 kg over the mass of Pu-234 in kg) to get -2.615E9 J

This is however, incorrect and I don't know what step I am doing wrong...haven't been able to get a hold of my professor...Thanks!

Dr. Bob if you see this...I also had a question on my earlier posting (sorry I don't know how to type in the sub/super scripts...)..

• Chemistry -

Nevermind...I realized that the problem I was using as an example called for 1 g of the reactant used....this didn't....so I have my correct answer now. Thanks!

Still stumped on my earlier question though...

• Chemistry -

I think I've answered that in an earlier response. I think you are looking at a neutron.

• Chemistry -

you have the right answer but don't factor in one gram of substance, it wants the amount per alpha decat there are alot of alpha decays in a gram.

So it is just 1.016E-12

## Similar Questions

1. ### Chemistry

write isotpoic symbols of the form X-A (for example, C-13) for each of the following isotopes. **Do I add the number of protons and neutrons together to get the answer?
2. ### measurements

How much will it cost to carpet a 13 ft by 18 ft room if carpeting costs \$14.50 per square yard?
3. ### math

The mass m(t) remaining after t days from a 70 g sample of thorium-234 is given by the equation shown below. m(t) = 70e-0.0274t Find the half-life of thorium-234. (Round your answer to the nearest tenth.)
4. ### chemistry

show that the mass number and the number of protons are conserved in the following nuclear equation: 234 230 4 92 U-----> 90 th + 2 he
5. ### Chemistry

Write a nuclear equation for the following: Iodine 131 undergoes beta decay two times Plutonium 239 is an alpha emitter Th 234 undergoes beta decay once and then alpha decay How do I go about writing nuclear equations?
6. ### physics

A uranium nucleus 238 U may stay in one piece for billions of years, but sooner or later it decays into an α particle of mass 6.64×10 −27 kg and 234 Th nucleus of mass 3.88 × 10 −25 kg, and the decay process itself …
7. ### 4th math

can you help me with this problem,? here is the number of lunches served last week at a school. 234,234,245,250,255. I already got the median is 245 set and Mode is 234 set. what do you think will be the next number of lunches serves?
8. ### math

the probability that jim will make 0,1,2,3,4,5 or 6 shots out of six attempted field goals is shown below. what is the probability he will make 5 shots?
9. ### Chemistry

a.) How much energy is emitted in each alpha decay of plutonium-234 if 234Pu, 234.0433mu and 230U, 230.0338mu. b.) The half-life of plutonium-234 is 8.8 hrs. How much heat is released by the alpha decay of a 1 micro-gram sample of …
10. ### Physixs

In my homework example, it says that there are 234 nucleons (140+94) bound in the products of this reaction: n-1 + U-235 ---> Ba-141 + Kr-92 + 3n-1 Where are they getting that number?

More Similar Questions