Chemistry in the kitchen Teacher’s guidelines Lorena Payà Vayà Llicència C Curs 2007/2008 Index Unit 1. Can we do chemistry in the kitchen? 1.1. Strawberry smoothie. 1.2. Laboratory vs. Kitchen. 1.3. Safety in lab and in the kitchen. 1.4. Cutting onions or a scientific investigation. 3 Unit 2. How do we measure in the kitchen? 2.1. How do we measure the quantity of each ingredient in our cooking? 2.2. An Old Scottish Recipe or how to convert units. 2.3. Does one kilo of sugar
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The starting material for this lab was the dialyzed sample (stored at -20ᵒ C) from the previous lab. The CM sephadex resin (taken in a 50 mL tube) was already made swollen using Buffer C (20 mM HEPES‚ pH 7.9; 1 mM EDTA; 50 mM KCl). The dialyzed sample was thawed to the room temperature and gently poured over the resin. The tube was capped and kept on a rocker at room temperature for 1 hour. The tube was then centrifuged in a HS-4 rotor at 2500 rpm (1200g) for 5 minutes at 4ᵒ C. Supernatant was discarded
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determine what volume a pipet or flask really delivers. You will also calibrate a beaker or Erlenmeyer flask and a 50 mL buret. You will use these calibrated values throughout the remainder of the quarter. Construct a table at the front of your laboratory notebook to record calibration values or tape in the calibration tables from Chapter 2 of Harris’ 7th edition. How to read the level of liquid in glassware: The “meniscus” of a liquid refers to the curvature of the liquid surface in a narrow
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Purpose It is the project about Computer-shop management System. It automates the Systems records‚ their Selling and Maintenance‚ Balance evaluation‚ due to calculation other functions. In other words you can say it a complete computer-shop management System. In this project we can easily maintain systems sales details. It gives information’s of Annual Transaction of products‚ its services‚ daily sales‚ daily Receipt & Balance. We can see the Systems details before selling the particular items
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Products Liability Research Paper By Bobby Brown Sunbeam is an American made brand that has produced various household appliances since 1910. Their products have included the Mixmaster mixer‚ the Sunbeam waffle iron‚ Coffeemaster‚ and an automatic toaster. In 1928‚ the company’s head designer‚ Swedish immigrant Ivar Jeppsson‚ invented the Mixmaster mixer. Introduced to the public in 1930‚ it was the first mechanical mixer with two detachable beaters whose blades interlocked. Barbara Thompson
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inevitably produced from the incomplete combustion of gasoline or coal that originates in industrial and agricultural processes1. PAHs are also water pollutants and may be found in water supplies across the United States2. Research conducted on laboratory animals exposed to low levels of PAHs have shown that the animals commonly develop various types of cancer and other harmful health effects. The
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The experiment is trying to determine how much of a solution containing vitamin C is required to be added to 1 cm3 of blue chemical to change its colour from blue to clear. The experiment users an new and old lemon‚ orange and blackcurrant juice‚ each with varying amounts of vitamin C content. Each experiment has independent and dependent variables. The solutions of soft drinks contain different levels of vitamin C (with old and new varieties) will be the independent variables in the experiment
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References: Organic Chemistry Laboratory I‚ CH 337M; Department of Chemistry‚ Portland State University: Portland OR; p 1 Lab Two Question 1. 2. Recrystallization is generally not an effective purification method for a solid which is highly impure because the impure component could
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References: http://answers.yahoo.com/question/index?qid=20080911092315AAXRbXU http://answers.yahoo.com/question/index?qid=20090603175731AAvMEzf A Small Scale approach to organic laboratory techniques‚ 3rd edition. Pavia‚ Lampman
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EXPERIMENT 2 : UV-VISIBLE DETERMINATION OF AN UNKNOWN CONCENTRATION OF KMnO4 OBJECTIVE 1. To determine the maximum wavelength of potassium permanganate. 2. To plot the calibration curve of potassium permanganate. 3. To determine the concentration of an unknown solution of potassium permanganate. APPARATUS Beaker‚ burette‚ glass rod ‚volumetric flask 100ml ‚dropper CHEMICALS Potassium permanganate (KMnO4)‚ distilled water PROCEDURE A. Preparation of the KMnO4 standard solution
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