Because when you add salt to water you increase the boiling point (the temperature at which a fluid boils) and so you are cooking the egg at a higher temperature, therefore less time is needed.
Both hard n raw eggs
I like my eggs hard boiled. The water boiled in the pot.
I'm not sure what you mean by this. A hard boiled egg will spin faster and roll farther, if that's what you mean.
salt
it becomes soft
boiled water
The salt in the water has higher hidrogen count whick raises the egg faster. I don't know why this but it works. So if you were to have a race with a friend with hard boiled eggs (Dont know if regular eggs works) then your egg would reach the top faster due to the fact your in salt water. Answer: Salt Water
A previously boiled egg (unshelled) would simply be heated up and become a very hard boiled egg.
To boil them yes, otherwise no I store them in the fridge in an unused egg carton marked "Boiled".
It will be wet of course and it will break apart.
Yes. hard-boiled egg
The duration of Hard Boiled is 2.1 hours.