the rate of reaction and the surface area. The larger the surface are‚ the faster the rate of reaction seems to be. However‚ although the grain with the largest surface area (the smallest grain) reached the highest point within the shortest amount of time‚ its end result was still lower then the medium sized grain. The explanation for this result is relatively easy. The rate of a chemical reaction can be increased by increasing the size of the surface area to volume ratio of the solid reactant.
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Surface Tension of Liquids Karen Mae L. Fernan Department of Chemistry‚ Xavier University-Ateneo de Cagayan‚ Philippines Date performed: Nov. 22‚ 2012 ∙ Date Submitted: January 16‚ 2013 E-mail: fernankarenmae26@yahoo.com ------------------------------------------------------------------------------------------------------------------------------- Abstract Surface tension is defined as the energy or work required to increase the surface area of a liquid due to intermolecular forces
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Biology Digestive Enzyme Experiment “Design an experiment in which you will investigate a digestive enzyme’s effect on digestion” Research Question: To determine the effect of enzyme concentration on the rate of digestion. This will be done by increasing the concentration of the enzyme diastase and investigate its effect on the rate of starch digestion. The rate will be determined by the amount of time it takes to completely digest the powdered starch‚ the complete digestion will be indicated by
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OSAICase VI: Oasis Medical Objective: To understand the issues of place/distribution Case Position Statement: If you were a venture capitalist‚ would you invest $400‚000 for 40% of Oasis Medical (assuming you had the money)? Issues to Ponder: What would the preferred way to move these medical products from producer to consumer I would not invest the money to Oasis Medical. Although there is a good distribution strategy for their products‚ lack of actual data for investors. Oasis had a good
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the centre of the glass slide. This water is called a mounting medium. It helps produce a clear image. ____7. Hold a piece of onion bulb scale so that the concave (inner) surface faces you. Then snap it backwards as shown in figure 2. You should now be able to see a thin‚ transparent "skin" or epidermis‚ on the concave surface. ____8. Use the tweezers or your fingernails to pull off a piece of this epidermis. ____9. Place the piece of epidermis in the drop of water. Avoid wrinkling the epidermis
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Synopsis This project report explains about the surface tension and capillarity of liquid through a simple experiment of finding the capillarity of various detergents. Oil stains and grease on dirty clothes cannot be removed‚ using water alone‚ because water does not wet them. If detergents added ‚ surface tension is decreased‚ the area of contact is increased. Detergent molecules have the shape of a hairpin‚ one of which is attracted to water
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SOLIDS: Mass‚ Volume and Density Measurements A. Overview Review Sections 1.4 - 1.6 in your textbook (Chemistry: The Central Science‚ 9th Ed. ‚ Brown‚ LeMay‚ Bursten‚ & Burdge) This experiment will introduce you to a very important concept in science‚ especially chemistry: DENSITY. Density is the relationship between the mass of an object and the volume which it occupies. Solid substances generally have the greatest density‚ normally in the range of 1 - 25 g/cm3. Most liquids have densities between
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Dakhla Oasis is located in the western desert of Egypt‚ approximately 750 km southwest of Cairo. The study region covers an area of approximately 500 km2. The bottom of Dakhla depression is bordered from the north and north east by steep scarps of the Eocene Limestone plateau‚ but slowly rises to the south where it merges with the plain of Upper Cretaceous Nubian sandstone (Ghadiry et al.‚ 2012). Dakhla Oasis occupies one of a chain of structurally motivated topographic depressions underneath the
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Not all individuals appreciate the same thing and they don’t get steamed at the same thing either. In( sunset oasis) واحه الغروب by Taher‚ Mahmud who aches for the strength to battle the British colonization and one of the novel’s first individual storyteller‚ truly despised the desert while his wife Catherine delighted in with everything in the desert‚ and this
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of informing an audience about a particular person‚ place or issue within society. This film style is very popular with filmmakers for when they want to tell a person or place’s story like in The OASIS and the work of Captain Paul Moulds; a volunteer for The Salvation Army and manager of Sydney’s OASIS refuge. The Australian film is a full length documentary filmed over two years that provides a realistic observation of Paul’s efforts and the challenging lives of the homeless youth. They achieve
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