2. Find the energy released in the following nuclear reaction: n + 235 U 140 Xe

Question

2. Find the energy released in the following nuclear reaction: n + 235U 140Xe + 94Sr + 2n
Use the the following data for the atomic masses (in u) of the reactants and products

Atomic Mass

(u)

3. Find the energy released in the following nuclear reaction: 57Co +e 57Fe +
Use the the following data for the atomic masses (in u) of the reactants and products

Atomic Mass

(u)

4. 60Co is an example of a radioactive isotope used in cancer therapy. For a specific manufactured prodoct type, just after a sample of 60Co has ben manufactured, it has an activity of 5000 Ci (1 Ci = 1 Curie = 3.70 x 1010 decays/second). When the sample's activity has dropped below 3500 Ci, the sample is considered too weak to be used. The half life of 60Co is 5.271 years. (a) If a specific sample was manufactured on October 6, 2013, and it is now April 6, 2016, what is the activity of the sample? (b) Is it still usable?

I need all three parts please, thank you.

Atomic Mass

(u)

Explanation / Answer

Q.2 formula for enegy released in a chemical reaction is equal to

(atomic mass of product - atomic mass of reactant)931.5 MeV

so according to equation

answer is 7643.95 MeV

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