What is the change in entropy of helium gas with total mass 0.120 kg at the normal boiling point of helium when it all condenses isothermally to liquid helium? assume that the normal boiling point of helium is 4.216 k and the heat of vaporization of helium is 2.09×10^4 j/kg .

-594.87666 J/kg

Explanation:

m = Mass of Helium = 0.12 kg

T = Temperature = 4.216 K

= Heat of vaporization =

Change in entropy is given by

The change in entropy is -594.87666 J/kg

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.