According to Dalton's law of partial pressure
The total pressure of a mixture of ideal gases is sum of the partial pressures of each gas present in the mixture
So if we know the partial pressure of all the gases we can determine the total pressure of the mxiture by adding all of them.
Thus
Ptotal = PCl2 + PF2 + PHe
Thus
Partial pressure of helium = 205 - ( 89 + 15) = 101 kPa
Answer:
List of some processes in chemistry:
Oxidation
Reduction
Hydrogenation
Dehydrogenation
Hydrolysis
Hydration
Dehydration
Halogenation
Nitrification
Sulfonation
Ammoniation
Alkaline fusion
Alkylation
Dealkylation
Esterification
Polymerization
Polycondensation
Catalysis
18 total ( this is not all processes, just some) :3
Hope this helped :D
the answer is C, natural gas.. hope it helps