Question

Why is the universal gas constant in J K mol?
Where does the Joules come from?

Answer 1

PV=nRT P=Pascal V=Meter Cube n=Mole T=Kelvin All these units are SI units..and joule comes from P=Force/Area of Surface=Kg/meter square and we take Volume=cubic meter PV=kg.meter so this is a energy unit joule...

Answer 2

how does force/area=kig/meter square?

Answer 3

where does the joule come from?

Answer 4

I am soryy İt is Newton

Answer 5

ok. where does energy come into the picture?

Answer 6

take newton instead of kg

Answer 7

PV=(Newton/square meter)(meter cube)=Newton.meter

Answer 8

is that energy?

Answer 9

or force?

Answer 10

Pascals

Answer 11

İt is work and the unit of work is joule=Newton.meter

Answer 12

so what is pa?

Answer 13

Pascal is a another unit of pressure and it is (kg/meter square)

Answer 14

my textbook:
"1 Pa= 1 N m^-2

Answer 15

:)))take Newton instead of kg :))

Answer 16

so what is the difference between Pa and J then?

Answer 17

Joule=Newton.meter and Pa=Newton/meter square

Answer 18

so because its volume (L) times pressure we get meter square?

Answer 19

is volume L or cubic meter?

Answer 20

cubic meter SI unit

Answer 21

not liter İt is not a SI unit

Answer 22

not in my book :S

Answer 23

:))Does your book have to involve all things?? about science :))

Answer 24

I'm trying to get from pV to Joules... with my book

Answer 25

I understand

Answer 26

but i get the picture, thanks

Answer 27

the joule is the unit used when u times the stuff together

Answer 28

Not at all :) if you want to get more information about units,I think you should study dimensional analysis İt'll be usefull

Answer 29

http://en.wikipedia.org/wiki/Joule
now there you have all relations of SI units to Joule and just write down all SI units of all components of equation and you will get J trust me :)

Answer 30

:) thanks