Trans-resveratrol has long been known to exhibit antioxidant properties owing to the presence of three hydroxyl group which can readily scavenge any free radical either by donating a hydrogen atom or by forming a non radical product with the radical. Reactive oxygen species (ROS) and reactive nitrogen species (RNS)‚ the most potent of free radicals have been shown to be involved in initiation of heart and cancer related diseases by damaging DNA and other macromolecules in the body. It is associated
Premium Nutrition Antioxidant Vitamin C
Abstract By adding HCl to 2-methyl-2-butanol‚ through the Sn1 mechanism‚ 2-chloro-2-methylbutane is formed. Water‚ sodium bicarbonate and NaCl(aq) were then added to the 2-chloro-2-methylbutane to remove any of the excess water from the reaction. To confirm‚ a successful reaction‚ AgNO3 was added to the 2-chloro-2-methylbutane. A white precipitate formation confirmed a successful Sn1 reaction. Introduction Nucleophilic substitution reactions such as Sn1 and Sn2 allow us to convert one functional
Premium Alcohol Functional group Chemical reaction
The Saga of :-) One colon‚ one hyphen and one parenthesis——by pressing these three keys on his keyboard‚ the computer scientist Scott E. Fahlman made the first sideway smiling face in human history‚ dubbed “emoticon”. Nowadays‚ six billion of them flooding the Internet on a daily basis‚ along with their slicker younger sisters‚ emojis. While demonstrating a rampant and iridescent interplay of symbols‚ images‚ and the complexity of human language‚ these burgeoning modern “hieroglyphics” are bringing
Premium Communication Psychology Emotion
12U Equilibrium Unit Test Multiple Choice K/U Identify the letter of the choice that best completes the statement or answers the question. ____ 1. When solid lead(II) phosphate is in equilibrium with its ions‚ the ratio of lead(II) ions to phosphate ions is which of the following? a. 1:1 d. 2:3 b. 1:2 e. 3:2 c. 2:1 ____ 2. In a saturated solution of silver phosphate‚ the concentration of silver ion is 4.5 10-4 mol/L. The Ksp of silver phosphate would be which of the following
Premium PH Ammonia Acid dissociation constant
Project 1: Polymer Ball Vivian Kim General Chemistry 2045L Introduction Our assignment in this project was to create a bouncy ball for a company using polyvinyl alcohol (PVA)‚ polyvinyl acetate solid and sodium borate‚ by varying the ration of ingredients and to determine the best recipe for our bouncy ball. The company chose the materials because of their odorless and nontoxic properties. PVA is a water-soluble synthetic polymer and has adhesive properties
Premium Polymer Plastic Chemistry
buried in. It’s hard to imagine the earth still in one piece without the devoted affection and veneration the earth waits to receive. Chief Seattle asks “If we do not own the freshness of the air and the sparkle of water‚ how can you buy them” (Seattle 2-4)? How does man dare to claim a piece of land as his own and attempt to receive profit from it? On the contrary‚ man should be paying the land for its unconditionally loyal services Man should be paying respect above all to the land that treats him
Premium Nature Grandparent World population
absorbance of that solution. Beer‟s Law states that “there is a logarithmic dependence between the transmission of light that shines through a material and the density of the material as well as the length of the material that the light is traveling through”2. The logarithmic relationship is important to this lab because at high concentrations‚ absorbance is no longer directly
Premium Concentration Chemistry Light
Discussion Question #1 Singer argues that there is no moral justification for denying moral consideration to animals. Can you think of a reason why our moral consideration should include all humans regardless of their level of cognitive ability‚ yet denied to non-human animals simply because they have lower levels of cognitive abilities (though still higher in some cases than those of human infants and some mentally disabled humans)? What response might he have to your way of drawing the line between
Premium Cognition Thought Psychology
photo A. (4 marks) (c) Describe and explain the characteristics of these three industries. (i) Photo A (3 marks) (ii) Photo B (3 marks) (iii) Photo C (in tradition) (3 marks) (d) How do personal factors affect the location of industries? (2 marks) ## (a) Photo A: Textile industry; Photo B: Dairy industry; Photo C: Iron and steel industry (b) (c) (i) Textile industry is a labour-oriented industry. / Textile industry requires a large amount of labour for production. It is
Premium Iron Steel Iron ore
CHE 242 Tutorial 3: Problems & Answers Week 4: Feb 2- 6‚ 2009 1. Consider a gas that occupies 1.00 dm3 at a pressure of 2.00 bar. If the gas is compressed isothermally at constant external pressure‚ Pext‚ so that the final volume is 0.500 dm3‚ what is the smallest value Pext can have? Calculate the work involved using this value of Pext. Solution For compression to occur‚ the value of Pext must be at least as large as the final pressure of the gas. P1 = 2.00 bar‚ V1 = 1.00 dm3‚ V2 = 0.500
Premium Ideal gas law Gas