I need help with describing how to carry out an experiment to determine the specific latent heat of fusion of ice. I have a rough idea.
As Q = ml, we need to know the energy supplied and also mass of ice that has changed into liquid/ vice versa
we supply power from a known power source. And in order to find the energy supplied for the melting process, we need to know the time taken for ice to melt. When do we start the timeclock and stop it? Also, the mass of ice that has melted, is it referring to only that massmelted during the melting process or the entire mass of ice that has melted(since the ice will all melt anyway) . This question seems weird, I know.
Anyway, if you know of a better experiment, can you explain it to me? Thanks
Originally posted by bonkysleuth:I need help with describing how to carry out an experiment to determine the specific latent heat of fusion of ice. I have a rough idea.
As Q = ml, we need to know the energy supplied and also mass of ice that has changed into liquid/ vice versa
we supply power from a known power source. And in order to find the energy supplied for the melting process, we need to know the time taken for ice to melt. When do we start the timeclock and stop it? Also, the mass of ice that has melted, is it referring to only that massmelted during the melting process or the entire mass of ice that has melted(since the ice will all melt anyway) . This question seems weird, I know.
Anyway, if you know of a better experiment, can you explain it to me? Thanks
let me give it a try, i noe that tys got 1 is about mlv.
q= mlf . obviously u use a heater . oven (undecided) ?
then p=q/t
u will need a therm
because mlf is the time to change water to ice w/o change in temp or vice versa.
for convience sake. i would use a small block of ice , with a therm frozen in it .
meaning i freeze water together with therm.
eg. 1 small cube in which i find its mass and hold the therm at the middle ? (understand ? )
then i start timing when temp =0 and i stop when all the ice turn into water at 0 deg.
assumption would be heat absorbed is constand throughout the ice.
rough answer. u try to improve on it ?
Originally posted by yiha093:let me give it a try, i noe that tys got 1 is about mlv.
q= mlf . obviously u use a heater . oven (undecided) ?
then p=q/t
u will need a therm
because mlf is the time to change water to ice w/o change in temp or vice versa.
for convience sake. i would use a small block of ice , with a therm frozen in it .
meaning i freeze water together with therm.
eg. 1 small cube in which i find its mass and hold the therm at the middle ? (understand ? )
then i start timing when temp =0 and i stop when all the ice turn into water at 0 deg.
assumption would be heat absorbed is constand throughout the ice.
rough answer. u try to improve on it ?
Which TYS? Which year? Don't recall there's a specific question for finding specfic latent heat of fusion in TYS, though there are questions on finding the electrical power input for boiling water. But for that question they provide you with the specific latent heat of vaporization. 2005 paper.
Thanks anyway
Originally posted by bonkysleuth:
Which TYS? Which year? Don't recall there's a specific question for finding specfic latent heat of fusion in TYS, though there are questions on finding the electrical power input for boiling water. But for that question they provide you with the specific latent heat of vaporization. 2005 paper.Thanks anyway
duuuude i say mlv -.-''
i lazy find where la. lol. but cfm in tys cause i did it a few days ago.
checked ...o lv no this qns
okok. later i find.
bonkysleuth, your set-up appears ok to me. Just that the part on when you start/stop the timeclock, well, I think that part needs some modification. Not sure if it's correct. I tried googling it but the only useful results are some notes from VJC web, which I think the experiment process is too complicated.
ts . my bad. i mixed it up, is what u ahve said. the qn , that is.
hey audi can look at my answer tooo ?
Hi, this's very urgent. Would someone kindly tell me what's the "finalised" procedure? Any minor changes will help. Thank you.
ask cher tmr lor.