This calculation was used to determine volume of 6 molarity KOH and 6 molarity HCl needed to synthesize 1 gram of KCl: These chemicals combined in the acid-base reaction: KOH (aq) + HCl (aq) KCl (aq) +H2O (l) The respective volumes of each solution were measured out in graduated cylinders and combined in a large beaker (to increase surface area for evaporation)
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which pipettes can be inserted Variables Independent Variables: Incubation temperature Type of seed used (germinating or non-germinating) Dependent Variables: Rate of respiration Constants: Time allowed for beans to respire Volume of KOH added to absorbent cotton Type of glass tube used Volume of contents in each tube- the purpose of adding the beads along with the non-germinating seeds is to ensure that each respirometer is uniform in volume. Controls: Respirometer with
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As I looked through my shelf for a journal to read‚ I saw an especially old and dirty book. I took it out and on the cover page‚ it read‚ “Sweet Memories”. I flipped through the pages and noticed that the edges of the pages were yellowed and with mildew on it. However‚ as I turned to the back page‚ I saw a picture of me having a soccer match in school during sports day. Then‚ I started to recollect the incidents on that fateful day. That day was the most significant day of my life. It was the annual
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chloride were dissolved in water to produce sulphuric acid and hydrochloric acid. How many moles of KOH will be required to completely neutralize the solution? Ans. SO 2Cl2 + 2H2O H2SO 4 + 2HCl Mol of HCl produced from 2.5 moles of SO2 Cl2 = 5 mol Mol of H2SO 4 produced from 2.5 moles of SO2Cl2 = 2.5 mol H2SO4 + 2KOH HCl + KOH K2SO 4 + 2H2O; KCl + H2 O Now‚ 5 mol of H2SO 4 require KOH = 2.5 mol Total KOH required = 10 + 2.5 = 12.5 mol. Question 2 Two acids H2SO4 and H3PO4 are neutralized separately
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Microbiology Laboratory Report Identification of Unknown Bacteria 03/10/05- 04/01/05 Authors: Richard Hendricks‚ Jessica Prebish; NMU Abstract: Broth culture 16 was randomly selected by our group and subjected to qualitative tests for taxonomic identification. The culture did appear homogenous throughout the testing period and is currently retained by Northern Michigan University’s department of Microbiology. We suggest that culture 16 is an example of Escherichia coli. Background: Techniques
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Study of the first element – Hydrogen. Answer the following questions:- 1. Give a reason why hydrogen can be placed in group 1[IA] and group 17[vIIA] of the periodic table. 2. What similarities does it show with group 1[IA] and group 17[VIIA]. With special reference to valency electrons and ion formaton and examples. 3. How does hydrogen occur in the free and combined state? 4. Which metals react with cold‚steam and boiling water to form their respected oxides and hydroxides ? Give examples and
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1.0 Introduction to Firefly FlyFirefly Sdn. Bhd. operating as Firefly is a full-service point-to-point carrier and a full subsidiary of Malaysia Airlines. The name Firefly was chosen to describe the airline’s characteristics‚ which represent agility‚ brilliance‚ charm and fun. With unique description‚ Firefly is easily remembered and recognized. It has the potential to grow and command a brand premium in the community it serves. Firefly is launched on 3th April 2007 and it is Malaysia’s first community
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Phuket: The Pearl of the Andaman Sea Phuket is the only province with the topography of the island‚ and a world-renowned tourist attraction and a great place to relax. It also suited to activities in the sea and on the beach as well. Phuket is known as the Pearl of the Andaman‚ the one of the most famous city of the world. With the beautiful scenery and sandy beaches‚ and crystal clear blue sea and full of the tourism facilities‚ Phuket is the most important island of Thailand‚ as a province in
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soaked with potassium hydroxide. The oxygen uptake is detected by displacement of coloured liquid in a thin glass U-tube connected to the container. When the organism takes in oxygen it gives off an equal volume of carbon dioxide. The soda lime or KOH will absorbed this carbon dioxide therefore air will be sucked in from the manometer to keep the pressure constant. The rate of changes gives a direct and reasonably accurate reading for the organism’s rate of respiration.Whether measuring a whole organism
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metal washers‚ parafilm‚1 tub of room temperature water‚ 1 tub of ice water‚ 2 thermometers‚ 6 pieces of nonabsorbent cotton‚ 6 pieces of absorbent cotton‚ 3 graduated cylinders‚ a beaker of 15% solution of KOH‚ two pieces of paper‚ and food coloring. The glass balls served as the control. The KOH absorbed the
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