2.3.2 Counter Ion “Most bacterial cell walls are charged with a negative charge‚ so most antibacterial polymers must be charged with a positive charge to facilitate the adsorption process. The composition of the counter ion‚ or polymer-linked ions‚ is used to balance the charge‚ it also affects the antibacterial activity. The counter ion has positive charge‚ which is a strong ion-pair with the polymer will inhibit the antibacterial activity because it will prevent the polymer from interacting with
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Another postulate of the kinetic molecular theory is that gas particles are always in motion‚ like the other states of matter. But they are different in that they undergo random translational movement. In solids‚ the particles mainly experience vibrational motion and in liquids they mainly vibrate and rotate‚ with some translational motion. Gas particles move rapidly in straight lines‚ unless acted upon by another particle or the walls of a container. This continuous contact with the container leads
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Chemistry 12: Reaction Kinetics Review 1. Looking at the expressions for reaction rate‚ write expressions with which you could express rates for the following reactions. (Hint: look at what happens to reactants and products.) Recall that solid or liquids can lose or gain mass‚ gases can lose or gain volume and aqueous solutions can increase or decrease in concentration. ("a" is done as an example.) a) Mg(s) + 2HCl(aq) H2(g) + MgCl2(aq) reaction rate = mass of Mg consumed unit time b) c) or
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Down the Hill Lab Report Kinetic & Potential Energy Name: Corinne Chen Block: 1 – 3 Date: May 22nd‚ 2013 Purpose: To investigate and compare the potential energy‚ kinetic energy and speed of a cart on a hill 1 kg h 1 m Materials: 1. 2. Cart & 1 kg mass 3. Board 4. Timer
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13/12/2011 Course Title: General and Inorganic Chemistry TOPIC 3: CHEMICAL KINETICS Lecturer and contacts Mr. Vincent Madadi Department of Chemistry‚ University of Nairobi P. O. Box 30197-00100‚ Nairobi‚ Kenya Chemistry Dept. Rm 114 Tel: 4446138 ext 2185 Email: vmadadi@uonbi.ac.ke‚ madadivin2002@yahoo.com Website: http://www.uonbi.ac.ke/staff/vmadadi 12/13/2011 mov 1 Introduction • Kinetics is the study of rates of chemical reactions and the mechanisms by which they occur. • The reaction
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It was in August 1998 that the first chinks in the Kinetic Honda Motors Ltd. (Kinetic Honda) armor were reported by Business India. Both Honda and the Firodias of Kinetic were quick to deny rumors of a split‚ though reports of the Firodias quietly raising resources to buy out Honda’s stake kept surfacing. The Firodias were even reported to have securitised the assets of their two-wheeler finance company - 20th Century Kinetic Finance (TCKF) - to raise this money. Trouble had been brewing since
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System I: Ion Channels 1. What structures in the cell membrane function as ion channels? Integral Proteins 2. Ion channels are selective for specific ions. What three characteristics of the ions are important for this selectivity? 1. Charge 2. Size 3. Amount of water the ion attracts 3. Channels can be classified as either gated or nongated channels. A sodium channel that is always open would be classified as a/an __________nongated______________ channel. 4. Would sodium ions move into
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Buffer solutions and common ion effect A buffer solution resists (or buffers) a change in its pH. That is‚ we can add a small amount of an acid or base to a buffer solution and the pH will change very little. How to calculate pH of buffer solution containing both acid and conjugate base? Dissociation constant definition 1.1 can be rearranged into or (note that due to sign change [A-] was moved to nominator). This is so called Henderson-Hasselbalch equation (or buffer equation)
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Anemia of Chronic Disease 1. Differentiate between absolute and functional iron deficiency in the context of ACD and IDA. Absolute iron deficiency is when the stores of iron are depleted and bone marrow iron is absent‚ resulting in low serum ferritin and low transferrin saturation. Simple absolute iron deficiency usually results in iron deficiency anemia and can be resolved with iron supplementation. Functional iron deficiency results in anemia of chronic disease/inflammation‚ where infections
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How to choose the best flat iron for every hair type When it comes to flat irons‚ you should know that there are various models available on the market such as ceramic‚ titanium or tourmaline flat irons. There are also other alternatives including the metal and glass irons‚ but they are not so popular. They provide low quality straighteners which can damage your hair. However‚ before buying a flat iron‚ it’s recommended to do some research and find a quality device which must be the right choice
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