3:25 7 All on My iPhone During a GC analysis, n-octane (C8) and n- decane (C10) were well separated in capillary GC column (using isothermal condition at 2000C) with retention times of 5.85 min and 6.25 min, respectively, with base width of 4.0 s and 5.0 s. Unretained solvent peak occurs at 50.0 s. Calculate i. the number of theoretical plates for n-octane (C8) and n-decane (C10). ii. separation resolution for C8 and C10? ii. if the separation is repeated using isothermal condition at 180C, predict the changes of n-decane (C10) peak retention time. d) You are instructed to analyze traces of pharmaceuticals present in an environmental water sample. Describe the steps involved in solid phase extraction (SPE) if the sample is to be treated