a) Enthalpy of vaporization equals enthalpy of fusion .
b) Substances with large molar masses have relatively low vapor pressures.
c) Vapor pressure increases as the kinetic energy of a liquid's particles increases.
d) Temperature changes during a phase change.
e) For ice to float in water, it's density must be less than that of water.
2007-11-08 09:49:54 · 7 answers · asked by metalmonkey71 1 in Science & Mathematics ➔ Chemistry
DO YOUR OWN HOMEWORK
2007-11-08 09:51:57 · answer #1 · answered by Sasha 3 · 1⤊ 0⤋
Well, D and E aren't true. The rest Im not really sure what they mean. hehe =]
BTW. the density of something does not have to be less than water for it to float in water. Oil floats and it has a greater density. Ice sinks because of its weight=], but its still made out of water , therefore it has a posibility of floating.
The temperature of the water has to do with floating. Oil floats when the water is hot (like your soup)
2007-11-08 09:53:54 · answer #2 · answered by :) 2 · 0⤊ 0⤋
Of course e) "For ice to float in water, it's density must be less than that of water." The only way for something to float in water would be if its density is less than that of water.
2007-11-08 09:53:39 · answer #3 · answered by and89y 2 · 0⤊ 0⤋
a) True
b) True
c) True
d) False
e) True
2007-11-08 09:54:11 · answer #4 · answered by steve_geo1 7 · 0⤊ 0⤋
seriously. why are u putting your homework online. i bet in the time it took u to get on the computer,go to the internet, go to yahoo, put up this question, and wait for answers, you could have figured it out.
2007-11-08 09:55:36 · answer #5 · answered by Anonymous · 0⤊ 0⤋
all of em tru xcept 4 d
but seriously shudn't u be doin ur own homewrk??
2007-11-08 10:07:24 · answer #6 · answered by Anonymous · 0⤊ 0⤋
i know E is true but i dont know the other ones....
2007-11-08 09:53:30 · answer #7 · answered by tmrwmayb2l8 1 · 0⤊ 0⤋