Introduction: The purpose of this lab is to see how the colour of an apple would change (browning) over time‚ when placed in different conditions. When referring to the term “browning”‚ it is meant to imply the change of colour that occurs inside the apple‚ giving an appearance that is distasteful (Di Guardo et al.‚ 2013). Specifically‚ within this lab the apple was cut into 4 pieces with 3 pieces being placed on a weigh boat‚ and a 4th piece placed in a beaker of water. These weigh boats were
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The purpose of the lab is to identify the compound based on a constant composition by performing a serious of tests. The hydrate is solid crystals compound and appears to be dry: since an ionic compound (salt) is crystallized from an aqueous solution (water)‚ by heating the hydrate the water is released from ionic structure; therefore it is possible to measure the weight of the ionic compound and calculate its ratio to the liquid in the hydrate. The goal of the lab is to establish the identity
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Introduction: There are times when it is necessary to go through something both inside and outside‚ literally‚ to learn. This was exactly the case with virtual lab #11 where the experiment called for an examination of an earthworm’s exterior anatomy and interior anatomy. The earthworm as a whole is considered the dependent variable as we cannot change it. However‚ the labels to be placed can be moved so they are the independent variables. My hypothesis is quite elementary. I believe that after studying
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Morgan Kimmerle Monday Lab Dr. McCorkell Abstract The purpose of this study was to cross and analyze the reciprocal crosses of wild flies and mutant flies. In this lab Drosophila melanogaster commonly known as fruit flies were used to understand some important genetic principles that were once proposed by Gregor Mendel. Mutant traits can be autosomal dominant‚ autosomal recessive traits‚ or even sex-linked dominant and sex-linked recessive. F1 and F2 generations were obtained by performing
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The lab required pressing two toothpicks against the skin simultaneously. It was difficult to press down both toothpicks at the same time and this skewed the results. When the toothpicks weren’t pressed down at the same time‚ it felt like one point‚ then another
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We often hear that inhalation or contact with black mold can cause nasty black mold symptoms like runny nose‚ itchy eyes‚ and breathing trouble with associated signs of asthma. There is even mention of more serious symptoms. What Is Black Mold Anyway? They are very common in buildings and homes and grow where there is excessive humidity and moisture. In fact‚ they grow both indoors and outdoors. They can enter your house from various routes like open doorways‚ windows and via air conditioning and
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Introduction In the amylase lab‚ it was being tested if amylase‚ an enzyme found in saliva‚ would be denatured by being put in an acid or high temperatures. This lab is about denaturing amylase. It is tested by exposing it to pH and temperature changes. It is then mixed with Benedict’s solution‚ is a solution that changes color from blue to reddish brown when maltose is present. Amylase breaks starch into maltose‚ so is the amylase isn’t denatured‚ it should change colors. Amylase is an enzyme
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Formal Lab Report | Chemistry | | Student name: Sara Hattar Grade: 10 ”C” | | Teacher: Christine Ziadat | | | Title: Investigating the effects of changing the concentration of an acid on the rate of reaction between HCl and Magnesium. Aim: In this experiment we are going to see the effects of using three different concentrations of HCl when added to Magnesium metal on the rate of reaction. Hypothesis: If the concentration of the acid increased in reaction between HCl (the acid)
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day two‚ it seemed that three of the larvae did not survive due to their small size compared to the others. By day four‚ it seemed that four did not survive; however‚ movement was present in the others. By day eight‚ most of the larvae died due to mold development. However‚ three of the larvae started to progress into the pupal stage‚ but some of them did not complete the transformation. At day eleven‚ there were signs of eye development present in the larvae who reached the pupal stage. By day thirteen
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father-and-son team‚ Custom Molds‚ Inc. was formed to design and produce custom molds for plastic parts. By the mid-1990s‚ the company expanded into the manufacture of plastic parts. As of 2009‚ the sales mix at the company changed‚ causing problems. Bottlenecks are occurring during the production process‚ causing delays in customer deliveries. In addition‚ a few orders have been returned because of defective parts. Analysis Tom and Mason Miller‚ the owners of Custom Molds‚ face a number of major
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