(1) Answer to Question in lab manual. NO introduction/background etc. 1. What is the retention time for caffeine? Retention time for caffeine : 4.149+4.142+4.152+4.1454 = 4.15 2. What is the retention time for benzoic acid? Retention time for caffeine : 2.651+2.817+2.857+2.9274 = 2.81 3. How are the retention times for caffeine and benzoic acid related to their chemical structure and the nature of the chromatographic
Premium Chromatography Linear regression Analytical chemistry
Discussion: Conclusions: • For both meters it was noted from plots that the difference in pressures are directly related to the rate of discharge. • Coefficient of discharge have a varying value depending on the rate of discharge‚ where in the Venturi meter the value of Cd increase gradually at first with increasing the rate of discharge till a point approaching one‚ then started to descend with further increment in the rate of discharge. • The Coefficient of discharge " Cd
Premium Fluid dynamics
1. Animals Experiments were carried out in adult male Wistar rats (200-225 g; 2-2.5 months old)‚ obtained from Central Animal Research Facility‚ NIMHANS‚ Bengaluru. Adult rats were group-housed (3 per cage) in a climate-controlled vivarium with a 12:12 h dark/light cycle. All animals had free access to food and drinking water except during the stress procedure or behavioral evaluation. All the experiments were performed during the light phase between 10:00 h and-14:00 h. All experiments were approved
Premium Animal testing Animal rights Behaviorism
processes‚ and correct conclusions of the lab that will be pertinent for the AP Exam; you will each complete the following assignment and staple it to the back of your lab when you turn it in on Tuesday January 3rd 2012. Lab 7 Fly Hybridization Experiment “Essay” Each of you will write a one page typed essay for this lab. This essay should be 1 inch margins and typed in 12 point Times New Roman font. • You will be explaining the lab as if you were crossing wild type males with white eyed
Premium Times Roman Typeface Experiment
Experiment 1 Background Diffusion is a process‚ in relation to the spontaneous movement of molecules from an area of high concentration‚ to an area of low concentration down a concentration gradient. It is a type of passive transport method‚ that requires no cellular energy (ATP). This movement occurs‚ until a state of equilibrium has been established on both sides of the membrane. The diffusion of molecules happens at cellular level‚ through a cell membrane via the pores. The cell membrane
Premium Osmosis Glucose
positively charged ions (Cations) move away. Anode: Electrode which becomes negatively charged. During the process‚ positively charged ions (Cations) more towards the electrode whilst negatively charged ions (Anions) move away. [Electrodes for this experiment are firstly copper and secondly galvanized steel] (Wikipedia Editor ‚ 2012) (Wikipedia Editor ‚ 2012) (Columbia Electronic Encyclopedia‚ 2007) 2. Direct Current:
Premium Electrochemistry Zinc Battery
EXPERIMENT 5 TRANSVERSE STANDING WAVES A string attached to a turning fork is set vibrating at the same frequency as the tuning fork. The length and tension in the string are adjusted until standing waves are observed on the string. By knowing the tension in the string and the wavelength of the standing waves‚ the frequency of oscillation of the string and thus‚ the tuning fork is found. This value is then compared to a strobelight determination of the frequency. THEORY
Premium Wave Wavelength Frequency
Silver Mirror Experiment Background: This experiment was first conducted by Bernhard Tollens‚ it is used to determine whether a carbonyl containing compound is an aldehyde or a ketone. An aldehyde is a compound containing a formyl group (CHO).The experiment involves diamminesilver complex and a chemical reagent (also known as “Tollens’ reagent”) which in this case is glucose. In a successful experiment a reflective silver metal should precipitate‚ with characteristics identical to that of a mirror’
Premium Alcohol Aldehyde Carboxylic acid
straight line with a gradient that gets deeper that is what I predicted. To improve my experiment to make it even more reliable I could use a more accurate ammeter and a larger range of results as well as more checks. The ammeter I use could be more than two decimal places‚ and I could get a lot of results and put them on one graph to make my results are reliable and I have a good accurate graph. Analysis When the bulbs received more current the molecules in the bulb vibrated fast and
Premium Ohm's law Electrical resistance Resistor
Beginning with Science 02: Scientific Investigation For this assignment you will do two things: Part I: Evaluate one experimental design. (10 points) Part II: Design your own experiment using the scientific method. (40 points) Review each scenario below‚ and choose one to complete for your assignment. Each scenario contains specific questions that will ask you to provide examples‚ explain your suggestions for improvement‚ and refer to the lesson. Be sure to respond to each question in complete
Free Scientific method Hypothesis Theory