Nuclear Reactor Physics Qestions me

[cimgo1903]

Why don't you answer my Nuclear Reactor Physics Qestions? ...Please Help me

[/B]1 ) Dry air at normal temperature and pressure has a mass density of 0.0012 g/cm³ with a mass fraction of oxygen of 0.23. What is the atom density of ¹⁸O?


2) In the centre of the core of a 1000 MWe BWR, the observed fission rate is 1.7×10¹² cm^-3 s^-1 and the observed temperature of the fuel is 800 ^oC. What will be the fission rate at the same location if the temperature is raised to 1000 ^oC? (Hint, Σf is a non- 1/v cross-section.)

 

[Astronuc]

[/B]1 ) Dry air at normal temperature and pressure has a mass density of 0.0012 g/cm³ with a mass fraction of oxygen of 0.23. What is the atom density of ¹⁸O?

Please show work. Determine the mole fraction of oxygen in air. Then apply the isotopic fraction of ¹⁸O.