Physics questions

[Freaky_spider]

Question one: Why dont we mix hot ethanol with cold water (3 reasons)

 

Questions two: why dont we mix cold ethanol with hot water (1 reason)

 

Question three: why dont we mix cold water with hot oil or visa versa? (1 reason, i got this one but wanna be sure im right )

 

thats all for now 

[Sheldon_King]

Question one: Why dont we mix hot ethanol with cold water (3 reasons)

 

Questions two: why dont we mix cold ethanol with hot water (1 reason)

 

Question three: why dont we mix cold water with hot oil or visa versa? (1 reason, i got this one but wanna be sure im right )

 

thats all for now 

Sorry that I can not help specifically with the science, but question number 3 is easy. Mixing hot oil with cold water causes the oil to pop and get all over everything in the area, including you causing a need for a burn unit (if you don't wear a protective suit when adding the water). 

[Freaky_spider]

Sorry that I can not help specifically with the science, but question number 3 is easy. Mixing hot oil with cold water causes the oil to pop and get all over everything in the area, including you causing a need for a burn unit (if you don't wear a protective suit when adding the water). 

owkay, so i got question 3 right then

[Sheldon_King]

owkay, so i got question 3 right then

Anyone that has ever set the frying pan on fire can get that question right. 

[ManOfDisguise]

cuz physics? i dunno

[Osmium]

I don't know the answers but I know ethanol has a very low specific heat and a low boiling point while water has a a high specific heat and a high boiling point so I presume it has something to do with those properties.

[Freaky_spider]

Here: http://goo.gl/Io9Kom

really, already tryed that, also, sadly that site isnt permitted to use... 

[Sheldon_King]

Here: http://goo.gl/Io9Kom

 

Note for the future, LMGTFY links are against the forum rules. http://linustechtips.com/main/topic/95599-linus-tech-tips-forum-code-of-conduct/ point number 6 under core values. 

[PassionFruit]

Note for the future, LMGTFY links are against the forum rules. http://linustechtips.com/main/topic/95599-linus-tech-tips-forum-code-of-conduct/ point number 6 under core values. 

dis^

[mansoor_]

*chemistry not physics

[Freaky_spider]

*chemistry not physics

uhm, heat capacity is physics, not chemistry, i know what im talking about, except that i dont know the answers

[Osmium]

uhm, heat capacity is physics, not chemistry, i know what im talking about, except that i dont know the answers

Well it is both really.

Saying heat capacity is not one or the other is like saying clock speeds are only for CPUs or GPUs(or RAM etc.).

[TheRoss0411]

I think that is chemistry

[Freaky_spider]

I think that is chemistry

well, could be, but im seeing it in my physics class, so i thought it would be physics

[Osmium]

I don't know the first but I imagine pouring hot water into ethanol would evaporate the ethanol since even though the water is below the boiling point of ethanol it has more energy than what is required to boil ethanol.

 

I don't take physics but I am just thinking through things and I could be wrong.

[Vitalius]

Question one: Why dont we mix hot ethanol with cold water (3 reasons)

 

Questions two: why dont we mix cold ethanol with hot water (1 reason)

 

Question three: why dont we mix cold water with hot oil or visa versa? (1 reason, i got this one but wanna be sure im right )

 

thats all for now 

I don't know the answers but I know ethanol has a very low specific heat and a low boiling point while water has a a high specific heat and a high boiling point so I presume it has something to do with those properties.

^

Think logically here for a second OP. If ethanol has a very low specific heat and boiling point, what happens when you pour hot water into cold ethanol?

And what happens when the opposite happens?

[werto165]

Could you apply this: http://en.wikibooks.org/wiki/A-level_Chemistry/OCR_(Salters)/Chip-pan_fires

[mansoor_]

However you wish to spin it, the question fundamentally asks for the results between the interaction of two substances, this is the definition of chemistry.

 

1- The term "chymistry", in the view of noted scientist Robert Boyle in 1661, meant the subject of the material principles of mixed bodies

 

1.  Boyle, Robert (1661). The Sceptical Chymist. New York: Dover Publications, Inc. (reprint). ISBN 0-486-42825-7.

 

sorry i don't know the answer as to why you dont mix them, other than they do dissolve in great proportion into one another.

[Freaky_spider]

for those interested in the answers

 

1: ethanol evaporates very quickly, its flamable, mixing water en ethanol is very exothermic

2: same as the last answer of 1

[Freaky_spider]

 

However you wish to spin it, the question fundamentally asks for the results between the interaction of two substances, this is the definition of chemistry.

 

1- The term "chymistry", in the view of noted scientist Robert Boyle in 1661, meant the subject of the material principles of mixed bodies

 

1.  Boyle, Robert (1661). The Sceptical Chymist. New York: Dover Publications, Inc. (reprint). ISBN 0-486-42825-7.

 

nope, water and ethanol dont engage in a bond, they just float in between eachothers.

 

for it to be chemistry, the atoms have to change, but that doesnt happen when you mix water and ethanol, 

[Osmium]

nope, water and ethanol dont engage in a bond, they just float in between eachothers.

 

for it to be chemistry, the atoms have to change, but that doesnt happen when you mix water and ethanol, 

 

Even though calling a property of a substance a type of science is stupid you are actually correct in your point. However both of you are arguing something meaningless. Specific heat and boiling points are properties of matter used in both chemistry, organic chemistry, and physics.

[Freaky_spider]

Even though calling a property of a substance a type of science is stupid you are actually correct in your point. However both of you are arguing something meaningless. Specific heat and boiling points are properties of matter used in both chemistry, organic chemistry, and physics.

yea, its pretty pointless, 

 

its pretty arguing about religion, there just really isnt a real answer

 

EDIT: damit if just brought religion in this argument, this could go horribly wrong... 

[Osmium]

yea, its pretty pointless, 

 

its pretty arguing about religion, there just really isnt a real answer

 

EDIT: damit if just brought religion in this argument, this could go horribly wrong... 

 

QUICK EDIT IT!

AHHH!

[LukaP]

Question one: Why dont we mix hot ethanol with cold water (3 reasons)

 

Questions two: why dont we mix cold ethanol with hot water (1 reason)

 

Question three: why dont we mix cold water with hot oil or visa versa? (1 reason, i got this one but wanna be sure im right )

 

thats all for now 

these all depend on the circumstances but, ethanol is just an alchohol with a relatively high boiling point so it doesnt really matter

 

1) we can, however you mix ethanol with water, nothing will happen since ethanol has a lower boil point than water therefore, just heating up the water

 

2) if there is enough hot water, it will boil the ethanol very quickly, making it "explode"

 

3) if the oil is cold enough, the water poured onto it will boil, and due to increased pressure, make the oil burst everywhere.

 

 

Now this is very for the common man. if you want, just qoute me and i can show you the equations and mechanics behind the phenomena, and exlpain some more

[Freaky_spider]

these all depend on the circumstances but, ethanol is just an alchohol with a relatively high boiling point so it doesnt really matter

 

1) we can, however you mix ethanol with water, nothing will happen since ethanol has a lower boil point than water therefore, just heating up the water

 

2) if there is enough hot water, it will boil the ethanol very quickly, making it "explode"

 

3) if the oil is cold enough, the water poured onto it will boil, and due to increased pressure, make the oil burst everywhere.

 

 

Now this is very for the common man. if you want, just qoute me and i can show you the equations and mechanics behind the phenomena, and exlpain some more

this will do, thanks, i apreaciate it! if youre bored, id like to see those equations, but i dont need em, im just interested to see them,