Answer: The partial pressure of the Kr is 320 mm Hg.
Explanation:
According to Raoult's Law , the partial pressure of each component in the solution is equal to the total pressure multiplied by its mole fraction. It is mathematically expressed as
where, 
= partial pressure of component A
= mole fraction of A
= total pressure
mole fraction of Krypton = 
Thus partial pressure of the Kr is 320 mm Hg
The mass percentage of Na in NaCl is 39.0%
This means that if there's 100 mg of NaCl , 39 mg of the compound is Na.
For compound to contain 39 mg Na - 100 mg of NaCl should be present.
Therefore for the compound to contain 400 mg - 100/39 x 400 - 1025.6 mg
The mass of NaCl present should be 1.026 g
The element that would have 4 electrons in its outer p orbital, or p subshell would be Oxygen. Oxygen's electronic configuration would suggest that there are 4 electrons in its p sub shell.
O : 1s^2 2s^2 2p^4.
Answer - The basic requirement for becoming a meteorologist or a climatologist is a 4-year Bachelor of Science degree in Meteorology or Atmospheric Sciences. Some teaching, research or management positions require a Masters of Science degree or a Ph.
