The aim of this experiment was to calculate the concentration of an unknown solution of Sodium Hydroxide (NaOH) by titrating it with Hydrochloric Acid (HCl) and to identify any possible sources of error. A colour change from pink to yellow signified the end of each individual titre as the NaOH had been neutralised. Experimental: Method: Firstly two solutions were prepared to show the colour of the Phenol Red indicator in acid and alkaline conditions. These colours were then used to determine the
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they depicted true thoughts of Jewish captives during this time period. Though most of the novel described life in concentration camps‚ three lines truly portray the feelings‚ emotions and mindset Jews had under the Nazi regime. "Never shall I forget those moments that murdered my God and my soul and turned my dreams to ashes..." (Wiesel 34). This line shows the impact concentration camps had on Wiesel’s life‚ soul‚ and belief. As a child‚ Wiesel became Godless for he saw no God of his would allow
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Concentration Camps The Holocaust was traumatizing event in the 1900s. It was a life changing event for the Jews. This time period went down in history. Rudolf Hoss‚ estimated during Nuremberg Trial that nearly three million people died while being held hostage in death camps. Also‚ ninety percent of the ones killed were known as Jews. In death camps the people who were known as “different” suffered from cruel treatment‚ harsh environment and immoral medical experiments. Well‚ we all know HItler
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investigation: The effect of solute concentration on osmosis in potatoes. Research question: What is the solute concentration of a potato? Hypothesis: Osmosis is the movement of water across the membrane from an area of high concentration to an area of low concentration. The osmosis continues until the solute concentrations are equal in both areas. In this experiment‚ we put pieces of potatoes into test tubes with sugar solutions of different concentrations and leave them there over night. It
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In conclusion‚ the concentrations and absorbance of the Kool-Aid solution were found. The purpose of the experiment was to develop a deeper understanding of the effect that concentration has on the absorbance of light–which the objective was met. To add‚ another goal of the experiment was to determine the unknown solution’s concentration using the absorbance data recorded. This was concluded to be 0.25 M–most similar to Solution #1. Concentration‚ measured in molarity (M)‚ can be calculated using
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The result of mineral content of wheat flour and banana peels is tabulated in table (3) that shows the concentration of phosphorus in wheat flour was the highest (784mg/kg) followed by potassium‚ calcium‚ sodium‚ iron‚ manganese and zinc (427‚ 238‚ 151‚ 38.03‚ 5.72 and 3.19 mg/kg) respectively. In banana peels‚ the concentration of potassium was the highest (16303 mg/kg). The concentration of calcium‚ sodium‚ iron‚ manganese‚ zinc and phosphorus were (3321‚ 440‚ 1217‚ 54.73‚ 1.97 and 641 mg/kg)
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Concentration Camps During the Holocaust Bergen-Belsen Concentration Camp was located in north central Germany near Hanover. The camp is named after the nearby villages of Bergen and Belsen. It was created in 1939 during World War II. In 1940‚ a prisoner of war camp was constructed. At the camp‚ the conditions were harsh and extreme; abuse‚ disease‚ and starvation was very common throughout. One woman‚ Alice Lok Cahana‚ who was deported from Auschwitz to Bergen-Belsen in 1944‚ described the camp
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Effects of Molasses Concentration on Yeast Fermentation The purpose of this lab was to determine how yeast cells are affected by the concentration of a food source‚ and for our purposes‚ the food sources were corn syrup and molasses. Our hypothesis was that the yeast cells would ferment the most when there was a higher concentration of molasses/corn syrup. In order to test this‚ we created 10 test tubes with decreasing concentrations of molasses/corn syrup using a serial dilution. Each test
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AIM The aim of this investigation is to explore the effect of different concentrations of bile salts on the time taken for the lipase enzyme to break down fat. BILE Bile is a brownish bitter alkaline fluid produced by the liver and made by the hepatocytes from water‚ bile salts‚ bile pigments cholesterol and phospholipids and stored in the gall bladder. Bile is directly connected with digestion. It is released sporadically into the small intestine (duodenum) which is part of the gut in order
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Abstract: The purpose of this experiment was to determine the concentration of an unknown amount of copper sulfate using the spectronic 20. Four solutions of different concentrations of H₂O and CuSO₄ were put into the spectronic 20 to observe their absorption of light. Then‚ a graph was created to plot down the measurements. Using the calibration curve of the graph‚ the concentration of the unknown substance was found out to be .12M. Background/Introduction: Beer’s law (which states that
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