Why does room-temperature water feel cold to your hand if it is coming from a bowl of warm water but the same room-temperature water feels warm to your hand if it is coming from a bowl of ice-cold water?

What is the mass of sodium in 3 moles of sodium chloride

Compare and contrast physical changes with chemical changes.

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.