plants because of it’s smaller storage unit located at its base. Chlorophyll a had a larger band width than chlorophyll b with an approximate value of 0.65 Rf compared to 0.45 Rf. Chromatography paper is successful in separating different pigments because each pigment has its own polarity and solubility. The pigment chlorophyll A is more soluble than chlorophyll B and therefore travel further up the chromatogram. Chlorophyll b is the most polar of all the pigments, followed by chlorophyll a. The
filtration of precipitate. Filtration allows for separation of impurities from pure compound. When setting up the apparatus, the filter paper was wet with a couple drops of water for a variety of reasons. Primarily, the water droplets hold the filter paper in place. Secondly, making sure to add the proper solvent to the filter paper before vacuum filtration causes the filter paper to have a similar polarity allowing for the easier separation of precipitate from
1. ABSTRACT In all precipitation reactions, the ions of one substance are exchanged with the ions of another substance when their aqueous solutions are mixed. At least one of the products formed is insoluble in water. Two ionic compounds exchange ions. Reaction will not occur unless one of the products either precipitates, or is water. Dissociation, Ionic compounds – Metal + nonmetal (Type I & II) – Metal + polyatomic anion – Polyatomic cation + anion , Dissociation: when ionic compounds dissolve
Waves lab Research question How do optically different liquids ( in this experiment vinegar, water, coke, oil ), change the angle of refraction on a single laser ray? Independent variable In this experiment I will compare vinegar, water, coke and oil. Dependent variable Angle of the laser ray that will be refracted in the experiment. Controlled variable To make the experiment fair, I need to control the temperature of the liquids. Because if the temperature is changing, the solubility will change
to our research of other compounds. We determined the quantitative solubility of our compound by dissolving it in water until the solubility capacity was reached. By finding the solubility we were able to make inferences about the formation of a precipitate if our compound was involved in a chemical reaction1. We were able to compare our reading of solubility to online sources, allowing us to eliminate certain compounds that were completely out of range displayed in Table 1. With research we were
I. Once, there was a time where the Earth was healthy. There was an abundance of clean air, many plants and animals thrived, and the temperature was cooler. The Industrial Revolution then came, bringing along with it smoke, greenhouse gases, and a significant increase in the Earth’s temperature. This change in temperature is known as global warming, and it causes an particularly serious problem called climate change. Climate change is mainly caused by the high levels of greenhouse gases in
fruit, Mangosteen of G. mangostana Source: http://www.positivehealth.com/article/nutraceuticals/the-mangosteen-fruit-garcinia-mangostana-science-and-ongoing-research The hulls of the mangosteen fruit is the one that have chemicals that provide anti-inflammatory effects. Its constituents are α-mangostins and γ-mangostins. It has proven in a research study that it helps in inflammation [8]. Different Methods of Screening In-vitro screening of anti-inflammatory effects of Harpagophytum
Mercury as a pollutant in aquatic ecosystems Mercury is a highly toxic pollutant that rapidly spreads all over the world from its natural and anthropogenic sources. Although atmospheric mercury concentrations have been decreased by 20 to 38% since 1996 (Slemr et al. 2011), mercury pollution is still a severe threat to aquatic ecosystems. Recent causes of mercury pollution in aquatic ecosystems include oil and coal combustion, agricultural drain water and atmospheric deposition from electric power
structural, mechanical, optical and conductivity measurements of L-arginine 4-nitrophenol 4-nitrophenolate dihydrate (LAPP) single crystals grown by conventional and unidirectional method V. Sivasubramani, Muthu Senthil Pandian*, P. Ramasamy SSN Research Centre, SSN College of Engineering, Kalavakkam-603 110, Chennai, Tamilnadu Email: senthilpandianm@ssn.edu.in Good quality and optically transparent uniaxial L-arginine 4-nitrophenolate 4-nitrophenol dihydrate (LAPP) single crystal having dimension
methane and hydrogen) (Nigam & Singh, 2011). The secondary biofuels can be segregated into first, second and third-generation biofuels based on the substrate availability, technology maturity and GHG gas emission balance. (Bharathidasan et al. 2011). Research has provided more progressive and productive conversion technologies for the extraction of biofuels in solid, liquid and gaseous forms from ingredients such as wood crops and waste material. (Nigam & Singh,