Question

Anyone a genius in physics?




Which of the following systems reflects a decrease in entropy?

burning match

freezing water

evaporating alcohol

breaking glass

Answer 1

i got evaporating alcohol

Answer 2

@bibby do you know physics?

Answer 3

@kidrah69 yo poojah! you know physics dude?

Answer 4

i just need someone to clarify that i got this right.

Answer 5

freezing water

Answer 6

@icecreamman

Answer 7

yeah it is the water freeze,
when water freezes it is changed from liquid state (more entropy) to solid state ( less entropy)
thus we have a decrease in entropy

Answer 8

For measuring entropy, the formula is
dS=dQ/T

Answer 9

Here
dS=change of entropy
dQ=change of heat taken by the the system
T=temperature in kelvin scale

Answer 10

Just c
dQ will b negative

Answer 11

Because
dQ=Q2-Q1=something negative

Answer 12

Q2=heat of freeze
Q1=heat of hot water

Answer 13

So dS will b negative

Answer 14

So change of entropy is negative??????!!!!!

Answer 15

Response plz!!!!!!!

Answer 16

Sorry i was out but freezing water? Why isnt it evap alcohol?

Answer 17

Did u c my equation for measuring change of entropy

Answer 18

For evaporation of alcohol
dQ is positive
So dS is also positive
So entropy increasing
Right????!!!

Answer 19

T can not b negative

Answer 20

T= tamperature in kelvin scale

Answer 21

ooooooohhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh!!!!!!!!!!!! i get it!!! thank you so much!!!!!!!!!!!!

Answer 22

U r most welcomeeeee!!!!!!!!!!!

Answer 23

@shamim can you help with another question that i have?