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how does the intermolecular force of attraction lead to stain removal?
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- Please enumerate and explain 1. WHAT ARE THE GENERAL RULES IN GRAMS STAINING CLASSIFICATION OF BACTERIA?the addition of surfactant molecules (CMC: critical micelle concentration) select one or moreWhat is the retention factor (Rf) of the most polar and the least polar spot present in the standard ink?
- PURITY TEST Instructions: Note the REFRACTIVE INDECES of each of the samples and solve for their % purity relative to the refractive index of the reference standard. Answer the highlighted numbers. Reference Sugar Solution Sample A Sample B TRIAL 1 1.5376 1.4923 1.2865 TRIAL 2 1.4873 1.4087 1.3742 TRIAL 3 1.4980 1.3988 1.2893 Relative % Purity --------------------- 1 2 (ROUND OFF 2 DECIMAL PLACES) 1. 2. 3. Which of the two samples is pure relativel to the standard. FORMULA (see attached table)What is the retention factor (Rf) of the most polar and least polar spot present in the standard ink? (Use 2 significant figures)A supporting electrolyte is usually added to the analyte solution to minimize solution resistance.minimize solution conductivity.make the analyte less soluble in solution.increase the scan rate.
- In HPLC, why is purging being done before analysis of samples. Outline the procedure on how purging is performed.In a normal phase chromatography setup, which would be the predicted characteristics of the eluates based on retention time? eluates will be in decreasing polarity eluates will only contain the mobile phase eluates will only contain the stationary phase eluates will be in increasing polarityPlease Answer all the following items will give thumbs up and good rating. Matching type