Objective To determine soluble solid concentration in some fruits including tropical and temperate fruits by using handheld refractometer. Introduction “Sugar are the major soluble in fruits juices and estimate of sweetness. Other soluble materials include organic and amino acids‚ soluble pectins‚ and others. Soluble solid concentration can be determined in a small sample of fruits juice using a hand held refractometer. The measurement must be made at 20°C to get an accurate value. This instrument
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million Jews” (Fact Retriever 1). Concentration camps were responsible for this act of mass murder. Many would hide for from those responsible for the camps. The Nazis built and run these camps to imprison those accused of committing crimes against the state or known as “enemies of the state”. During the holocaust‚ concentration camps left a mark on our society. First‚ they were created to detain so-called “enemies of the state”‚ so they were named concentration camps. In addition‚ the Nazi’s had
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In World War II‚ there were many concentration camps. Europe topped the charts of having large amounts of camps across the continent. These concentration camps were created for the purpose of “racially undesirable elements‚” such as Jews‚ homosexuals‚ nomadic ethnic groups‚ and Jehovah’s Witnesses. Even though the most originals were built just for the use of labor. The word “concentration” itself was portrayed as an idea of using documents to be confined to one specific place for a period of time
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has different concentrations on either side. Permeable means "allows anything to pass through". Membranes in cells allow small molecules (water) to pass through‚ but prevent bigger ones from passing. This is called "selectively permeable". Take a look at the following animation; If a selectively permeable membrane separates the two solutions‚ water moves through it in both directions at the same time. However‚ more water leaves a dilute solution (high water concentration) and passes into
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determine the concentration of acetic acid in white vinegar. 2.0 Theory The concentration is a measurement of relative amounts of solute and solvent. There are many diverse ways of expressing concentration but the most accepted and widely used is molar concentration and regularly referred to as molarity which is defined in mole‚ the amount of solute dissolved in one litre of solution. [pic] In this experiment there are solutions used with accurately known concentrations called standard
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some may argue to be the pioneering method in the field‚ the Grammar Translation Method (GTM)‚ various other methods have been devised‚ in order to try and overcome the limitations of their predecessors. It is well known that each method has its strengths and limitations. The degree to which the strengths catalyse‚ and the limitations impeding the learning process of the student‚ depends mostly on the student him/herself‚ as different people have different aptitudes and personalities. Thus‚ I believe
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different concentrations of sucrose solutions have an effect on the final weight for the potato tubers?” In this experiment we estimated the osmolarity of potato tuber cores by submersing different potato cores into sucrose solutions of 0.0-0.6M‚ and weighing the potato. The results showed the weight of the potato tubers had the highest percent change in weight meaning that they weighed more than the initial weight in sucrose solutions from 0.0-0.3M; it also showed that sucrose concentrations from 0
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Chirag Patel Biology 157 Determining the Effect of Varying Substrate Concentration Question: How does concentration of potatoes affect the amount of oxygen produced with hydrogen peroxide and potatoes (enzymes)? Introduction The enzyme used for this experiment is Catalase. Catalase is inside mostly any living organism which uses oxygen. Its job is to break down hydrogen peroxide‚ into oxygen and water. (Formula) 2H2O2 ---> 2H2O + O2 (lab manual). There are limiting factors which if altered
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find the concentration (mole/dm3 (M)) of solute in a potato cell by using the process of osmosis and different concentrations of sucrose solution. Background information Osmosis is diffusion of water across a partially permeable membrane. It moves from a solution with less solute concentration (high water potential) to a solution with more solute concentration (low water potential). The one with a high water concentration is called a hypotonic solution and the low water concentration is called
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After visiting Dachua concentration camp‚ I learned that my worldview and the worldview of those who were imprisoned collided on the issue of human development. The lifestyle in the concentration camp was formed to incorporated dehumanizing tactics that altered the prisoners’ human development. The prisoners’ names were removed and given a number so incorporate the lack of individuality and personalization. Their belongings‚ possession‚ social class‚ and job was striped from their identity and removed
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