Explain nucleus into separated protons and neutrons

Reference no: EM13222684

1. How much energy must be supplied to break a single 6Li nucleus into separated protons and neutrons? (masses: 6Li, 6.01347; 1H, 1.00728; 1n, 1.00867 amu)

2.The half-life of 90Sr, a byproduct of nuclear testing, is 28.8 years. If 25g of 90Sr is released into the groundwater from a nuclear waste storage site, what mass of this nuclide remains after 100 years?

3.Which statements concerning chain reactions are true?

1. When there is a supercritical mass the chain reaction accelerates until an explosion occurs.
2. When there is a sub critical mass, neutrons escape from the material without causing a reaction.
3. A critical mass is the quantity of fissionable material needed to sustain a nuclear reaction with a constant rate of fission.
4. A chain reaction occurs because the fission of uranium-235 produces (on average) 2.4 neutrons.

4. 41Ca decays by electron capture. The product of this reaction undergoes positron decay. What is the product of this second decay reaction?

Reference no: EM13222684

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