decrease the distance between molecules. Caffeine’s ability to experience dipole-dipole and london dispersion forces minimizes the intermolecular distances between the caffeine molecules and allows the molecules to experience strong attractions towards each other. Caffeine generally has a higher density than smaller molecules because the greater number of electrons in caffeine will allow for stronger dispersion forces. The intermolecular distances of compounds that have the ability to form hydrogen bonds
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present in colloidal solution. The intensity of the scattered light depends on the difference between the refractive indices of the dispersed phase and the dispersion medium. Greater is the difference‚ greater the intensity of light. Brownian Movement There are continuous collisions between the colloidal particles and molecules of dispersion medium which are in constant motion and passes kinetic energy to colloidal particles by striking it from all sides. This results into zigzag movement of colloidal
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variability or dispersion? Provide a rationale for your answer. The control group had the least amount of variability as evidenced by lower SD (Empowerment total – 9.02 baseline to 8.91 post. Self-care and efficacy – 14.02 baseline to 12.24 post. Depression – 10.88 baseline to 10.45 post). A smaller change in SD indicates that the data tends to stay close to the mean. 6. Did the empowerment variable or self-care self-efficacy variable demonstrate the greatest amount of dispersion? Provide a rationale
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diameter of about 50 Um which allow many no of modes through it. single mode step index has an adv of lower inter modal dispersion as there is only one mode present there is very low chance of dipersion multimode fiber has high intermod dispersion due to large no of propagating modes in it and moreover due to varying group velocities of propagating modes results in dispersion and as a result it restricts bandwidth in multi mode fiber adv of multi mode over si fibers: use of spatial non coherent
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destruction of intramolecular hydrogen bonding that restricts rapid hydration and swelling of polymer particles (Kabayama and Patterson‚ 1958; Williams et al.‚ 2010a; Williams et al.‚ 2009‚ 2010b). Hence‚ it can be concluded that the improvement in dispersion behavior of HPMC-LAC CP was predominantly due to molecular level
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1 Class XII Chemistry Ch 5: Surface Chemistry Chapter Notes Top Concepts / Key learnings: 1. 2. 3. 4. 5. 6. Adsorption: The accumulation of molecular species at the surface rather than in the bulk of a solid or liquid is termed as adsorption. Adsorbate: The substance which is being adsorbed on the surface of another substance is called adsorbate. Adsorbent: The substance present in bulk‚ on the surface of which adsorption is taking place is called adsorbent. Desorption: The process of removing an
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tracking powder (TP). CS Capsule suspension A stable suspension of capsules in a fluid‚ normally intended for dilution with water before use. DC Dispersible concentrate A liquid homogeneous formulation to be applied as a solid dispersion after dilution in water. (Note: there are some formulations which have characteristics intermediate between DC and EC). DP Dustable powder A free-flowing powder suitable for dusting. DS Powder for dry seed treatment A powder
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Chapter-5 SURFACE CHEMISTRY The branch of the Chemistry wich deals with the study of surface phenomena is called surface Chemistry. POINTS TO BE REMEMBERED: --1. Adsorption: - The accumulation of molecules species at the surface rather in the bulk of a solid or liquid is termed adsorption. 2. Desorption:-Removal of adsorbate from the surface of adsorbent is known as Desorption. 3. Sorption:-When adsorption and absorption both takes place simultaneously. 4. Type of adsorption: - On the basis of interaction
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attenuation‚ modal dispersion‚ and chromatic dispersion. Attenuation can cause splice performance issues because of dirty fiber end faces‚ excessive gaps between fibers or improperly installed connector offsets of fiber cores when mated. Modal Dispersion also known as angle acceptance is another factor that can cause splicing performance issues. This is caused with a differential delay between the modes‚ which can cause a lower bandwidth. Lastly‚ you have chromatic dispersion which is the limited
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Virginia Woolf’s Feminism in Three Guineas 罗莎莎 2011061113 Abstract Virginia Woolf was one of the most important novelists in the 20th century‚ more over‚ she is‚ when it comes to feminism‚ an incomparable figure at the times in England. In her essay – Three Guineas – we can see three different parts‚ as the title indicates. This masterpiece‚ published in June‚ 1938‚ is written in a form of letter. With a direct first narrator tone‚ the author makes the whole essay more reasonable
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