Lab Report - Microbes Aim: To investigate four areas of the school and to find out which of the four have the most microbes. Areas to Sample: 1. Girl’s locker room (Senior school) 2. Girl’s locker room (Elementary school) 3. Boy’s locker room (Senior school) 4. Boy’s locker room (Elementary school) Hypothesis: We predict that the boy’s locker room in the senior school will have the most microbes. First of all‚ there are more people using our locker rooms in the Senior School
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Laboratory Report 1 Title : Accurate Measurement of Mass and Volume Part A: The Formula of Hydrated Copper (II) Sulfate Aim: The objective of this experiment is to find out the accurate mass of a solid and to calculate the moles of an unknown. Materials: The materials used in this experiment are Hydrated Copper (II) Sulfate‚ weighing bottle‚ analytical balance‚ laboratory balance‚ casserole‚ spatula‚ and hotplate. Methods: First‚ approximate 1.0g of hydrated copper (II) sulfate was
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Thursday 9/29/11 3:00pm Michaela Howard Partner: Craig Delancy Separation of a Mixture Containing Calcium Carbonate and Naphthalene Objective: Finding a method to successfully separate a mixture of calcium carbonate and naphthalene. Properties to be considered: Calcium Carbonate Naphthalene Solubility in water slightly insoluble Solubility in ethanol insoluble partially Melting point 825 degrees C 80.2 degrees C Boiling point decomposes 218 degrees
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GRAVIMETRIC DETERMINATION OF MOISTURE IN FERTILIZER SAMPLES J.P. FERRERIA DEPARTMENT OF COMPUTER SCIENCE‚ COLLEGE OF ENGINEERING DATE PERFORMED: DECEMBER 6‚ 2012 ------------------------------------------------- RESULTS AND DISCUSSION In this experiment‚ we demonstrated the process called gravimetric analysis‚ where we‚ specifically‚ measured the amount of moisture in a fertilizer sample. Here‚ the weights of the crucibles with the fertilizer samples are measured before and after placing
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Thomas Warren Research and discuss the family photograph album. How and why is the family album used to construct notions of identity? Introduction Family photo albums have existed in many different forms. Not only as a personal flick book documentation containing “the chronicles of a family’s private story” (Fong‚ 2004‚ p.86) capturing special moments and events of the past; but the idea of documenting one’s past through images has been in existence since humans roamed the earth. Through
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Speech title: Essentials for an overnight backpacking trip. Specific purpose: At the end of my speech‚ the audience will be able to understand the basic necessities to go on an overnight backpacking trip. Thesis statement/central idea: Overnight backpacking is fun and with basic understanding and knowledge‚ anyone can try it. Introduction Imagine yourself walking thru the wilderness‚ the leaves crunching underneath your feet‚ birds singing in the distance‚ squirrels playing in the trees… Are
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Making up Hydrogen Peroxide Volume required 250 cm3 and concentration required 0.1 moldm-3 Given concentration of H2O2 = 1.7 moldm¬-3 Number of moles (n¬¬¬¬¬¬¬¬¬¬¬) = Concentration (moldm-3) x Volume (dm-3) = 0.1 x 0.25 = 0.025 mol Volume (dm-3) = Number of Moles (n) X 1000 Concentration (moldm-3) = (0.025/1.7) x 1000 = 14.7 cm3 Distilled water required: 250 cm3 – 14.7
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AP Chemistry Dr. Istone Lab 3: Gravimetric Analysis of a Metal Carbonate Lab Objective: In this lab we will determine the identity of a group 1 metal carbonate compound by gravimetric analysis. The unknown is weighed and dissolved in water and the precipitate is filtered‚ dried‚ and weighed. From the data the formula weight and identity of the unknown metal carbonate is determined. Lab Procedure: 1. Set up the Bunsen burner and ring clamp‚ light the burner and heat the crucible
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Basic Parts of a Sewing Machine and Their Functions: The basic structure of sewing machine is the same whether it is hand-operated sewing‚ treadle sewing machine or electric sewing machine. The basic parts of a sewing are listed below and seen in Fig. Parts of a Sewing Machine 1. Spool pin: It is fitted on top of the arm to hold the reel. 2. Thread guide: It holds the thread in position from the spool to the needle. 3. Tension disc: The two concave discs put together with the convex sides
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Observation and Description A.I observed the following things in the classroom. There is a rolling cart with a TV on it‚ in front of the classroom. There is an overhead projector sitting to the left of the teacher and a filing cabinet. There is a teacher’s podium to the right of a wipe off board that the students can see. There is another wipe off board on the right side of the classroom. There is a sorter on the teacher’s desk to help keep the students organized. The students desk are facing
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