I think that's called "Trajectory"
It's a natural element because it appears on earth
Can you show the chart please
Answer:
.Electron affinity is -142 kJ<---------->O(g)+e−→O−(g)Process involves single electron addition
O−(g)+e−→O2−(g)<--------> Electron affinity is +710 kJ. .Process is endothermic
Cl(g)+e−→Cl−(g)=Electron affinity is -349 kJ. Process involves single electron addition
None of the of thee reactions ----------Electron affinity is +142 kJ.
Explanation:
Negative electron affinity values indicate that energy is given out when the atom accepts an electron. Halogens evolve a large amount of heat on forming halide ions.
Substantial amount of energy is absorbed when two electrons are added to O2- thus its electron affinity has a positive sign. Energy is evolved on adding only one electron to form O- is hence it has a negative value of electron affinity as shown.
Answer: 0.43molO₂
Explanation:
The ideal gas law for moles is 
. If you did not know, R is the ideal gas constant, 
.
Since the temperature must be in Kelvin, we must convert our given temperature from ℃ to K. 
Now that we have the temperature converted to Kelvin, we can plug in our information to the ideal gas law for the number of moles.
Therefore, the number of moles is 0.43molO₂.
I hope this helps! Pls mark brainliest!! :)
