During the test of an internal combustion engine, 3.00 L of nitrogen gas at 18.5 °C was compressed suddenly (and irrevers- ibly) to 0.500 L by driving in a piston. In the process, the tempera- ture of the gas increased to 28.1°C. Assume ideal behavior, what is the change in entropy of the gas?

Answer : The change in molar entropy of the sample is -14.22 J/K.mol

Explanation :

To calculate the change in molar entropy we use the formula:

where,

= change in molar entropy

n = number of moles = 1 mole

= final temperature =

= initial temperature =

= final volume = 0.500 L

= initial volume = 3.00 L

= heat capacity diatomic gas =

R = gas constant = 8.314 J/mol.K

Now put all the given values in the above formula, we get:

Therefore, the change in molar entropy of the sample is -14.22 J/K.mol

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.