del Valle Department of Biological Sciences‚ College of Science‚ University of Santo Tomas‚ España‚ Manila‚ Philippines Abstract Caffeine was extracted from Lipton tea leaves by multiple extraction techniques namely solid to liquid extraction and liquid to liquid extraction; the purification by sublimation and melting point determination. Three teabags with weight 6.2674g were boiled with water and then extracted with 60 mL DCM; extract was dehydrated with anhydride Na2SO4 then was collected
Premium Caffeine Solubility Tea
eutectic point of biphenyl. Unknown substances were then tested using the mixture melting point method in order to determine their identities. INTRODUCTION The melting point of a solid is the temperature where the substance changes from a solid to a liquid state. Using known substances and determining their melting points is a way to establish the purity of and to identify a sample. This lab demonstrates the temperature range where certain compositions of solid naphthalene and biphenyl begin to melt
Premium Chemical substance Mix Temperature
Does Adding Salt to Water Make it Boil at a Higher Temperature? Project Design Plan Everyone knows that water boils at 212°F‚ but does adding salt to a pot of water make it boil at a higher temperature? Being a person that cooks frequently at home‚ I wanted to test the debated idea that adding salt to my water will make it boil faster. One of my friends says it does raise the temperature and therefore cooks it faster. My other friend says it only helps it taste better. Literature
Premium Water Temperature Liquid
ECF 1. Prevalent cation is Na+ 2. Prevalent anion is Cl- E. Mechanisms controlling fluid and electrolyte movement a. Diffusion i. Movement of molecules from high to low concentration 1. Occurs in liquids‚ solids‚ gases 2. Membrane separating two areas must be permeable to diffusing substance 3. Requires no energy b. Facilitated diffusion i. Movement of molecules from high to low concentration without energy 1. Uses specific carrier molecules
Premium Water Blood Electrolyte
PORTFOLIO * Antiseptic Liquid * Hand Sanitizer * Medicated Plaster * Saving Cream with fresh fragrance * Body Wash * Soap – Original‚ Skincare‚ Cool‚ and Re- Energize * Liquid Handwash- Original‚ Skincare‚ Sensitive and Fresh * No Touch Handwash- Original and Cucumber PRODUCTS UNDER BRAND PRODUCTS UNDER BRAND APPROVED BY INDIAN MEADICAL ASSOCIATION ANTISEPTIC LIQUID DETTOL ANTISEPTIC LIQUID Dettol Antiseptic Liquid is a proven safe and effective
Premium Hygiene Reckitt Benckiser Antiseptic
Hydraulic fracturing is when a hole or "well" is drilled deep into the ground‚ in an effort to extract valuable natural gas reserves which exist beneath the surface. The process of constructing a hydraulic fracturing well includes drilling into the Earth--first vertically and then horizontally‚ then lining the well with a two-terminal tube with one terminal that is filled with water while the other pipes the recovered natural gases up above ground (Withgott & Laposata‚ 2014). In order to exhume the
Premium Natural gas Petroleum Hydraulic fracturing
Discussion on the Ethical Implications of Hydraulic Fracturing by: Sebastian Potes 7/16/13 ! Abstract As concern grows over the environmental impact of hydraulic fracturing‚ implementing policy that protects people and their environment from these potential dangers becomes an essential piece of the renewable energy picture. Hydraulic fracturing‚ or fracking‚ is the technique of extracting oil and natural gas trapped under ground by injecting a mixture of water‚ sand‚ and chemicals into the
Premium Natural gas Petroleum Water
Analysis of the Economic & Environmental Effects of Fracking Introduction Fracking‚ or hydraulic fracturing‚ is the process of extracting natural gas from shale rock. Fracking allows the world to retain natural gas from depths that were deemed unreachable by conventional technology. Recent advancements in Fracking technology have propelled America to the forefront of natural gas extraction. By this method‚ the shale rock is punctured with a high pressure fluid‚ causing it to rupture and
Premium Petroleum Natural gas Water
ends. Examples in practice in which flowing fluids exchange heat are air intercoolers and preheaters‚ condensers and boilers in steam plant‚ condensers‚ condensers and evaporators in refrigeration units‚ and many other industrial process in which a liquid or gas is required to be either cooled or heated. Heat exchanger works as hot water and cold water enters the exchanger‚ where the process of cold water gaining some heat and the hot water losing some takes place‚ before they both exit the exchanger
Premium Heat exchanger Heat transfer Temperature
USED DARK MOTOR OIL AS INK FOR PENTEL PENS A Science Investigatory Project Presented to the Special Program in Science‚ Technology and Engineering New Lucena National Comprehensive High School New Lucena‚ Iloilo In Partial Fulfillment of the Requirements in Research I CLAUDINE MAE BARCIMO JEESTIN KENT GABINERA MA. CHRIS MARQUELENCIA LUCEL PEOLLO RYAN PAUL PUEYO March 2013 Republic of the Philippines Department of Education New
Premium Analysis of variance Experiment The Used