No, if you are not in the room you are just wasting electricity.
Actually a good sentence is your mom could say"Go clean your room". You could say"whatever". The sentence would be. Go clean you room, whatever!
the liquid vaporizes and the resulting gas molecules wander about the room
Because if it is significantly over or under room temp. it will explode
It depends on what "comfortable" means to you, as it is an opinion. However, there are standards on room temperature as regulated by West Midlands Public Health Observatory, which says that living room temperature should be about 70oF and cooler in the bedroom.The answer above is not geared to the scientificdefinition of room temperature, which is a little different.See related links for more information.