The analysis of a raw material is carried out to determine its purity. Preparation of internal standard: 25.0mg of the internal standard ( 98.1% purity) are placed in a 10mL volumetric flask, dissolved and volumetric with mobile phase. Preparation of the standard: 15.0mg of standard is placed in a 50mL volumetric flask. dissolve and make volume with mobile phase, transfer a 2mL aliquot to a 25mL volumetric flask and 150L of internal standard are added, made to volume with mobile phase (Purity of the standard 99.2% ) Preparation of sample. Prepare in triplicate by placing 30mg of sample in a 50mL volumetric flask, dissolve and make volume with mobile phase, transfer a 1mL aliquot to a 25 mL volumetric flask and add 150L of internal standard and make volume with phase mobile. Everything is filtered through a 0.45m nylon membrane and placed in a The following data is obtained: a) Calculate the concentration of each standard b) Calculate the area ratio of all slides. c) Calculate the % wet base titration of each sample by the internal standard d) Calculate the % dry basis titration of each sample e) Calculate the mean and CV of the triplicate sample. Note. When calculating the ratio of analyte/internal std areas, use the result obtained with