Answer to Question #60730 in Chemical Engineering for sivadasan v

Question

i got the composition of a biodiesel from CHNS analyser is
C-76.61%, H-12.34% , N- 1.33%, O-9.72% (Oxygen by mass balance from CHNS). (i think the results are of in %volume).
Sample weight - 2.69mg. DENSITY OF SAMPLE -870Kg/m3
HIgher heating value of sample -37534KJ/Kg
1. WHAT IS THE LHV OF THE SAMPLE?
2. CHEMICAL FORMULAE AND MOLECULAR MASS?
3. HOW CAN I GET THE MASS FRACTION OF EACH COMPOUND?