Caffeine Lab Report

3. To purify and identify the product, recrystallization is used in order to purify the product, then melting point and TLC techniques are used to identify the product. Theory 4.

Introduction Metabolism is the sum of all anabolic and catabolic reactions within a living organism to sustain life. The energy required to perform these reactions is provided by oxygen in the form of ATP, therefore the oxygen consumption rate can be measured to determine the metabolic rate. Since oxygen is obtained through respiration, the efficiency of an organism’s respiratory system affects its metabolism. Previous studies have shown that caffeine affects the human respiratory center and occasionally dilates bronchus. It can thus stimulate human respiration and increase the metabolic rate (Haggins et al, 1915).

In the second portion of this experiment we will keep the temperature constant and divide the ½ tablet of Alka- Seltzer into 2 pieces ,3 pieces and an unbroken ½ tablet. It is my belief that Alka-Seltzer

A mobile phase is a fluid the solution is dissolved in and a stationary phase is the material the fluid moves through. The mobile phase can also be called the solvent. The two main types of chromatography

Caffeine is a chemical found naturally in few plants all over the world. From these plants it is processed into its pure form and then put into other things such as soda, energy drinks, tea, and pills. Energy drinks and soda are some of the most widely marketed products in the world, even though they contain the highest concentration of caffeine outside of pure caffeine supplements. It is a stimulant that affects everyone in strange but semi predictable ways. Research has been done on this topic since the 1920’s and many different conclusions have been reached.

The sample was frozen at -30 C to see the amount of caffeine was in it. Then the players

Whenever a consumer uses an energy drink a series of effects begin in his/her body. The organism receives an instant boost as the caffeine successfully manages to block the duties of the adenosine, a chemical located in the brain whose function is involved with sleeping. After the completion of the process caffeine forces part of the neurons in the brain to lighten up, which later on causes the body to release the hormone adrenaline. When the hormone is active it forces the liver to provide the bloodstream with additional

TABLE OF VARIABLES Independent Variable Method of measurement Concentration of HCl

Perspectives are often prejudiced by preconceived notions. Society has historically communicated that addicts are morally negligent people without any inclination to cease their destructive behavior and that the addiction itself is produced because of a character flaw or a weakness. Citing the addict’s seemingly careless attitude toward the financial burden and pain and suffering they arbitrarily cause others as proof of their imagined personality imperfections. As with numerous other things, unfortunately, experience is the best teacher. Before my personal journey with a drug-addicted child, I also held to the belief that an addict was an addict by choice and could stop the abuse by simply making the decision to.

DETERMINATION OF PERCENTAGE ETHANOL IN BEVERAGES 1. Introduction to Gas Chromatography Gas chromatography is a very powerful separation technique for compounds that are reasonably volatile. The components of a sample partitions into two phases, the 1st of these phases is a immobile bed with a great surface area, and the other is a gas phase that permeates through the immobile bed. The sample is evaporated and passed by the mobile gas phase or the carrier gas through the column. Samples separates into the stationary liquid phase, based on their solubilities at the given temperature.

Coffee vs energy drinks, who will win? People drink coffee and energy drinks because they wake you up and they get you ready for the day. Most energy drinks hold 8.4 ounces. On the other hand, coffee has 8 ounces. On the healthier side, coffee only has 1 calorie for 8 ounces while energy drinks have 110 calories for 8.4 ounces.

The crude caffeine was transferred to Petri dish. Petri dish was placed on a hot plate and covered with three disks of filter paper. Another petri dish filled with ice was placed just on the top of petri dish covered with filter papers. The heat was turned on and sublimation was performed for 5 minutes. The purified caffeine was scraped from the filter papers and its weigh was measured.

Leah Romero 10/30/2017 Conclusion Lab 3 Chem 102L In lab 3, fundamentals of chromatography, the purpose was to examine how components of mixtures can be separated by taking advantage of different in physical properties. A huge process in this lab was paper chromatography, which was used to isolate food dyes that are found in different drink mixes. The different chromatograms of FD&C dyes were compared to identify which dyes are present in each of the mixes.

Coffee is one of the most popular drinks in the world. In fact, it is estimated that every year, more than 400 billion cups of coffee are consumed all across the world. For many, it is the choice of drink early in the morning before work while for others it is the drink of choice when they want to burn the midnight oil. Well, whatever the case, there are many benefits in drinking coffee and some are quite shocking and unexpected too! 1.

The mixture was then distilled. When the temperature was reached to about 59℃, half vial of distillate (1V) and 1 mL of the liquid residue (1L) were collected. For 61.0℃, the distillation was then continued. Samples (2V, 2L) were taken at about 61.0℃.