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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Rebecca Saady ~Naked Egg Drop~ 24 May 2014 Abstract A wondrous thing is defying nature‚ which is the purpose of a device built to stop an egg from breaking at a height of 7 meters. The egg will fall onto a piece of paper‚ with cotton underneath‚ which is supported by a net of rubber bands‚ which are hoisted up by thick wood sticks. Also balloons are tied below to catch some of the force‚ and then just drop the egg. After the egg was dropped‚ it was a success; it landed smoothly and
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Comparing between the simple and fractional distillation‚ the fractional distillations for both n-propanol and acetone provided a better distillation. The data and graphs support the statement since the fractional graphs provided a steeper slope than the simple distillation. The steeper slope represent how fast the mixture are separated throughout the distillations. For example‚ the simple distillation for acetone the slope initially started at about 20 mL at about 65.5℃ and ended at about 30 mL
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Egg Lab Report Introduction: An egg is a model of a human because the egg has a cell membrane like humans do inside and outside of the body that let things pass through like water. We can use eggs to study the effect of changes in the external environment on the internal environment by having harsh environments like putting the egg in only alcohol and see what happens to the inside of the egg. Diffusion is the movement of a substance down its concentration gradient from a more to a less concentrated
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Photosynthesis Lab Report Purpose: To research the effect of different wavelengths (colors) of light on plant growth during photosynthesis. Background Information: Photosynthesis is the process by which sunlight is captured by chloroplasts within plant cells and turned into energy. This energy is used to help the plant grow roots‚ leaves‚ flowers and fruit. Energy is required by living things
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couple of key things about lab safety and procedure during this experiment. While working with the hot plates‚ I learned to pay a lot of attention to whether or not the hot plate was plugged in or turned on‚ as well as whether or not the wax was getting too hot. Measuring each substance into the cup was an important experience because it taught me to be deliberate and careful when measuring so as to not waste materials‚ making sure we did not have to start over. While this lab is a good starting point
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Adol Condensation Introduction: This reaction is carried out by adding benzaldehyde and acetone into a flask. The product created is a 1‚5-diphenyl-1‚4-pentdiene-3-one‚ which includes two double bonds‚ and two benzyl ring functional groups. This is a dehydration reaction that occurs twice in order to form the diene. After obtaining the product‚ via vacuum filtration‚ it will be recrystallized and then analyzed for purity by determining both products’ melting point. The two products will be
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Boys’ Code of Conduct In the article “How Boys Become Men”‚ written by John Katz‚ he analyzes situations he experienced while growing up. Katz believes that boys become men by not showing fear or feelings and not ratting on others. As in the novel‚ The Other Wes Moore‚ both Weses are forced to become men at an early age. They experience events that push them to make decisions that make them grow and think like men do. Katz details the maturation process for boys‚ as the book‚ The Other Wes Moore
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Transformation of E. coli by plasmid DNA 1. Table showing the results from the selective plates |Plate |Plasmid |Contents of plates |Number of colony | | | | |White |Blue | |1 |Ligation mixture |Ampiclillin + X- gal + IPTG |10 |0
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Ravindra Nandigam‚ Ph. D.‚ South Texas College Name: Course Number: Semester: Phys 1417 Physical Science II‚ Homework #5 Instructions: 1. Type your name‚ Course number (=PHYS 1417.V01)‚ and Semester (=Summer I‚ 2013). 2. Type your answers. Include questions. 3. Make sure that all parts of each question are answered. 4. Turn in. Chapter 25 Rocks and Minerals 1. List the 8 elements which make up about 98% of Earth’s entire mass. 2. The most abundant element in the Earth’s interior is __________________
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