Show the relationship between different units of pressure.
$(i) \ 1 \, atm = 101.325 \, kPa = 101325 \, Pa = 101325 \, N \, m^{-2}$
$(ii) \ 1 \, bar = 10^5 \, Pa = 10^2 \, kPa = 10^5 \, N \, m^{-2}$
$(iii) \ 1 \, atm = 1.01325 \, bar$
$(iv) \ 1 \, atm = 76 \, cm \, Hg = 760 \, mm \, Hg = 760 \, torr$
$(v) \ 1 \, torr = 1 \, mm \, Hg$
Note: $1 \, bar$ is approximately equal to $1 \, atm$,but they are not identical.
$(ii) \ 1 \, bar = 10^5 \, Pa = 10^2 \, kPa = 10^5 \, N \, m^{-2}$
$(iii) \ 1 \, atm = 1.01325 \, bar$
$(iv) \ 1 \, atm = 76 \, cm \, Hg = 760 \, mm \, Hg = 760 \, torr$
$(v) \ 1 \, torr = 1 \, mm \, Hg$
Note: $1 \, bar$ is approximately equal to $1 \, atm$,but they are not identical.
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