Complex sentence: That is, an element in its standard state has a nonzero value of "S" o at room temperature, because only at 0 K is the entropy of an element 0 J mol − 1 K − 1, the third law of thermodynamics.
Split into simpler sentences: That is, an element in its standard state has a nonzero value of "S" o at room temperature. Only at 0 K is the entropy of an element 0 J mol − 1 K − 1, the third law of thermodynamics.