A Science Question about Water Boiling and Freezing

[curling]

what boils faster, curling when his wife spends $700 on knives or curling when his daughter racks up a $200 cell phone bill?

LOL that is a toughy.

 

[myway]

Does room temp water really boil faster than if you use hot water out of the tap? I heard yes, but I don't believe it. Also I have heard hot water freezes faster than cold water. That makes no sense either.

Boiling happens when the vapor pressure of a liquid is equal to the atmospheric pressure. Is your hot water container open or closed? There's a lot of junk that matters about the whole thing. As far as freezing, a liquid turns solid when the molecules have lower energy than needed to wiggle around it's neighbors. Pressure matters, 2.
Why? Are u building a meth lab? Nevermind. I don't want to know.

 

[Whiskey]

Why do they call it taking a dump and not leaving one? After all, you're not taking it anywhere.

Whiskey

 

[The Shadow]

Boiling happens when the vapor pressure of a liquid is equal to the atmospheric pressure. Is your hot water container open or closed? There's a lot of junk that matters about the whole thing. As far as freezing, a liquid turns solid when the molecules have lower energy than needed to wiggle around it's neighbors. Pressure matters, 2.
Why? Are u building a meth lab? Nevermind. I don't want to know.

yes...but not in his question as those are considered constants


...you are referring to the ideal gas law where pv = nRT


With everything equal - warm water will reach its boiling point faster than water that is say 40 degrees colder as long as heating ramp stays the same....reverse it and the same applies to freezing

 

[Y_lifter]

LOL @ CursSchlong building an Ice lab..

 

[GoldenDelicious]

answer depends on mass of water, solutes and what methods of cooling are applied. there are some circumstances in which the above statements would be true, but for the most part, this is some really dumb stuff

 

[myway]

yes...but not in his question as those are considered constants


...you are referring to the ideal gas law where pv = nRT


With everything equal - warm water will reach its boiling point faster than water that is say 40 degrees colder as long as heating ramp stays the same....reverse it and the same applies to freezing

Yea, your right. I was just trying to give an idea about how it all kinda goes. I hate to just answer questions without giving a little idea about why. Maybe that's because I always ask, WHY???????????
I was not about to start talking Phase Diagrams and stuff like that. I just kinda wanted him to know why things are hot or cold.... kinda. That's all.

 

[bigmann245]

so does this mean a watched pot really never boils???

 

[myway]

so does this mean a watched pot really never boils???

I guess it just depends on how long u want to stand there. I'm sure u could find something better to do. Lol.

 

[bigmann245]

I guess it just depends on how long u want to stand there. I'm sure u could find something better to do. Lol.

but its so much fun, i also like to watch ice melt and i always watch the water go down the toilet