Topic: Nuclear chem problem (Read 12555 times)

unleash10 · « **on:** June 09, 2006, 08:09:44 PM »

147 62 Sm decays by a-emission. Write an equation for the reaction. The atomic mass
is 146.9146 amu. Calculate the energy associated with the reaction in MeV.

Ok So i know Sm will decay to 143 60 Nd and 4 2 He.

My question is how do I find out the mass of Nd of that isotope? It is not listed in any tables in my book.

pantone159 · « **Reply #1 on:** June 09, 2006, 10:06:20 PM »

My CRC (71st ed) table of the isotopes gives the mass of 143 Nd as 142.909810 amu.

unleash10 · « **Reply #2 on:** June 10, 2006, 02:31:39 AM »

The thing is, my teacher gave this as a homework problem, and didnt give the atomic mass of the isotope of Nd but he gave the atomic mass of Sm. So the only way to find out is through a table?

Mitch · « **Reply #3 on:** June 10, 2006, 01:30:09 PM »

http://www.isotope-table.com/

sdekivit · « **Reply #4 on:** June 11, 2006, 04:13:44 PM »

you know the mass of an a-particle right

pantone159 · « **Reply #5 on:** June 11, 2006, 05:08:27 PM »

Quote from: unleash10 on June 10, 2006, 02:31:39 AM

So the only way to find out is through a table?

Yep. Other than doing the same experiment that the people who made the table did.

Mitch · « **Reply #6 on:** June 11, 2006, 05:41:47 PM »

Quote from: Mark K on June 11, 2006, 05:08:27 PM

Yep. Other than doing the same experiment that the people who made the table did.

Yeah, making a mass spec. from scratch could be more difficult than looking it up in a table.

Topic: Nuclear chem problem (Read 12555 times)

unleash10

Nuclear chem problem

pantone159

Re: Nuclear chem problem

unleash10

Re: Nuclear chem problem

Mitch

Re: Nuclear chem problem

sdekivit

Re: Nuclear chem problem

pantone159

Re: Nuclear chem problem

Mitch

Re: Nuclear chem problem

Sponsored Links