D

Comment: A mole (abbreviated mol) is an Avogadro’s number (N ) of molecules, approximately equal to 6.02252 × 1023 molecules/mol. Darboux’s theorem On any symplectic manifold (M,ω) there exist local coordinates (canonical coordinates) (x1, . . . , xn, y1, . . . , yn) in which the symplectic form ω takes the form

ω = n∑ i=1

dxi ∧ dyi .