Lab 4: Photosynthesis and Chromatography of Spinach Leaves Discussion: The chromatography of the spinach leaves was taken to establish what pigments were present in the chloroplasts of the leaves. The solvent carried and separated the different pigments up the cellulose paper. The solvent moved up the paper because of capillary action because of adhesion of the solvent molecules and the paper. The pigments dissolved in the solvent also were carried up the paper and were separated because
Free Photosynthesis
Over the years models have become thinner each year. Models have a weight limit set to ninety pounds between the ages of eighteen and twenty one. Are models becoming too thin in today’s society? Yes‚ models have become too thin over the years‚ the average weight limit for a eighteen year old female is one hundred and twenty-three pounds and the average weight limit for a twenty one year old is one hundred and forty pounds. Models that are at the age of eighteen are thirty-three pounds underweight;
Premium Model Anorexia nervosa Nutrition
The significance of the title in decoding what is in the artist’s mind lies in the little details in the painting itself. The noun “layers” indirectly draws the viewer towards a picture covering a piece of material -- the tudung. What then does the title represent? It seemingly explains about the lessons that the artist had to learn or is in the process of learning while discovering
Premium Face Gaze Freedom of speech
There are three basic layers of a blood vessel: tunica interna‚ tunica media‚ and tunica externa. The inner lining of a blood vessel that comes into direct contact with blood is the tunica inerna. In this layer blood flows through the blood vessel in a tube that forms‚ this tube is called the lumen. There are three layers of the tunica interna: the innermost layer is called endothelium‚ the next layer is called the basement membrane which provides support for the epithelial layer which is made from
Premium Blood Heart Blood vessel
Separating Water Soluble and Acetone Soluble Inks through Chromatography Abstract: Chromatography is a term used to define a set of laboratory techniques for the separation of mixtures. Through Chromatography we analyzed complex mixtures. In our recent lab we analyzed complex mixtures. The purpose of this lab was to find whether the water soluble or acetone soluble liquid traveled farther. In our recent lab we measured the distance traveled by the different colored water and acetone soluble
Premium Chromatography Gas chromatography Analytical chemistry
Introduction Flash-Column Chromatography is another useful technique used to separate and purify complex mixtures of compounds. In this experiment‚ TLC is used to determine the best solvent system for the column. Due to Flash-Column Chromatography1 being an inexpensive technique‚ many scientist use this process for drug and natural product purification. Method By using the information from Experiment 6B‚ the TLC solvent system used was 30% EtOAc: 70% Hex. Experiment 7 was broken into two parts‚
Premium
Resolution of Matter into Pure Substances – Paper Chromatography Abstract The purpose of this laboratory was to determine how different substances have different solubilities in a given solvent. This was accomplished using the method of chromatography. The solubility of each substance was first determined by dropping a drop or two of each on a line drawn 2 inches above the bottom of a piece of paper. Then the paper was lightly bent in order to tape both sides of the paper leaving about a 4 centimeter
Free Solubility Chemical substance Sodium chloride
Men can appreciate nature for both its beauty and harshness. Even in the inhospitable environment of Mount Everest‚ a climber can recognize both during his climb to the summit. In Into Thin Air‚ Jon Krakauer records his trip in extreme detail‚ focusing on both his environment and the events that unfold around him. Krakauer uses several rhetorical devices to express his romanticized yet harsh attitude towards Mt Everest. The author uses both captivating diction and imagery to highlight his fascination
Premium Mount Everest Into Thin Air
The Potential Effects of a Depleted Ozone Layer - Detrykowski "And God said‚ let there be light and there was light and then God saw the light‚ that it was good " ( Genesis 1: 3-4 ). Undoubtedly‚ light is good. Without light man could not survive. Light is the ultimate cosmic force in this universe allowing man to progress and flourish. In the form of heat‚ light from the sun warms the Earth. Light‚ also‚ is the single most important factor influencing the growth and development of plants
Premium Ozone depletion Ultraviolet Sun
Full Report on Exercise 4.2 ESTIMATION OF PROTEIN CONCENTRATION BY SPECTROPHOTOMETRY And Exercise 4.3 GEL FILTRATION CHROMATOGRAPHY Joel Don M. Untalan CHEM 160.1 – 1L AY 2013 – 2014 Groupmates: Sonette Yao Kristopher Quilan Laboratory Instructor Carmelo C. Briones I. Introduction Analyzing proteins in determination of protein concentration by spectrophotometry is important. It determines to what concentration of a certain protein is in a crude sample. In this technique‚ a wide
Premium Chromatography Serum albumin