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
1. Rocks near mid-ocean ridge were younger than rock near trenches.
2. Matching bands of magnetic rocks were found on either side the mid-ocean ridge; record changes in earth's magnetic field over a period of time.
3. E<span>arthquake data showed oceanic crust is sinking on to the mantle at the trenches.</span>
<span>The chemical caharacteristics of the compound is different their corresponding elements. Eg. H2 - Combustible and O2 - Supporter of combustion BUT Their compound H2O is incombustible as it po...</span>
<h3><u>Answer and explanation</u>;</h3>
- To balance the charges of ions the number of electrons lost is equal to the number of electrons gained. The overall net charge must be zero.
- The number of ions needed to accomplish this is represented by the subscripts.
- For any given ionic compound, the product of the charge on the ion (or multiatomic ionic group) times the subscript of the ion will give a total charge of zero when all ions are considered.
For examples: NaCl Na = +1 Cl = -1 total is zero
4 , 2 ,2 , and this is addition reaction
