“All temperatures on Kelvin scale are always positive”. Explain giving suitable examples.B. Methane gas is collected at a temperature and pressure of 500c and 19 cm of Hg. To what temperature should it be cooled so that it occupies a volume which is 80% of its original volume when the pressure of the gas is 95 cm of mercury (Calculate only till one decimal place)

“All temperatures on Kelvin scale are always positive”. Explain gi

1.	“All temperatures on Kelvin scale are always positive”. Explain giving suitable examples.B. Methane gas is collected at a temperature and pressure of 500c and 19 cm of Hg. To what temperature should it be cooled so that it occupies a volume which is 80% of its original volume when the pressure of the gas is 95 cm of mercury (Calculate only till one decimal place)
Answer» On Kelvin scale the temperature is set at -273.15 when it is ABSOLUTE zero, beyond which the temperatures cannot go. Thus, the scale UNLIKE others STARTS at zero which is the lowest temperature on the scale. As lowest value on the Kelvin scale is zero, hence all FIGURES are in positive value.