Injection of 1ul of 19.5ppm benzene solution in MeOH solvent gave peak (k'=4.6) which is 10 higher than baseline noise. Column HP-1, 12m length, 0.32 mm I.D 0.1 u film thickness. Hold up time was 0.25 min Split vent flow was 78 ml/min. Compute benzene concentration which will give you the same response on the same system with 1ul splitless injection. Explain