water is an excellent conducter of heat?
the inside of the paper is wet?
paper is a poor conducter of heat?
the paper cup cannot become appreciably hotter than the water it contains.
2007-10-19 12:54:59 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Water is an excellent conductor of heat, and absorbs or uses the flames energy to evaporate. Because the paper cup cannot become appreciably hotter than the water it contains, the cup will not ignite until the water has all turned to steam and risen away.
2007-10-19 12:58:54 · answer #1 · answered by Anonymous · 0⤊ 0⤋
For the paper cup the convection fluid was water, this fluid has a boiling temperature of 212 degrees f. Paper will not burn until it has a temperature greater then 400 degrees f. So…the paper cup will not burn because it conducts the heat from the coals immediately to the water. The water molecules pick up the energy and by convection transfers it to the cooler less energetic water molecules until their energy is increased and finally all these convict their energy to the egg molecules…PRESTO cooked egg…the paper bag experiment uses the same theory but air in the bag I as convection fluid this time.
http://www.virtualsciencefair.org/2004/dela4l0/public_html/lit.html
2007-10-19 14:11:37 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The last one is correct.
Water has a pretty high specific heat and so, in order for the cup to become very hot, all of the water in the cup has to heat up to a high temperature too which usually takes quite a bit of heat.
2007-10-19 12:57:55 · answer #3 · answered by kdesky3 2 · 0⤊ 0⤋
Water boils at 212 degrees f. then gets no hotter. The cup won't get any hotter than the water. 212 degrees isn't hot enough to burn. 2 more points for me.
2007-10-19 13:00:18 · answer #4 · answered by Anonymous · 0⤊ 0⤋
The water prevents the paper from getting hotter than 100C.
2007-10-19 12:57:42 · answer #5 · answered by Robert S 7 · 0⤊ 0⤋
the cup will only get as hot as the water. same theory with fire walkers feet not burning instantly cause there blood will cool their skin to some degree
2007-10-19 12:59:02 · answer #6 · answered by Mike Fro 2 · 0⤊ 0⤋
I don't think that question even makes any sense; you can still set the cup on fire if you douse it in oil or something.
2007-10-19 12:58:57 · answer #7 · answered by Anonymous · 1⤊ 0⤋
Ooooo, ooooo I know. The fire is afraid of water, right?
2007-10-19 12:58:42 · answer #8 · answered by Dr. Quackenbush 5 · 1⤊ 0⤋
Is this a quiz or something? Go to wikipedia and look at it there.
2007-10-19 12:57:10 · answer #9 · answered by Anonymous · 0⤊ 0⤋