component‚ and so on‚ until it reaches the source again. In contrast‚ a parallel circuit is a circuit in which the has more than one resistor and has multiple paths to move along. The main purpose of this lab was to prove the laws of Ohm and Kirchhoff. On another note‚ being able to take part in this lab taught my partner and I the fundamental skills of constructing series and parallel circuit and using a multimeter to calculate the current and voltage of a circuit. I believe that if we only have the
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99¿103 (2005) ISSN-0011-1643 CCA-2984 Original Scientific Paper Acid Value Determination in Vegetable Oils by Indirect Titration in Aqueous-alcohol Media Elena Kardash* and Yakov I. Tur’yan National Physical Laboratory of Israel (INPL)‚ Givat Ram‚ Jerusalem 91904‚ Israel RECEIVED JANUARY 16‚ 2004; REVISED JULY 21‚ 2004; ACCEPTED OCTOBER 28‚ 2004 Keywords acid value vegetable oils indirect titration A new method of acid value determination in vegetable oils has been developed. The method
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turn off the primary production. Darkness has no effect on respiration. This is because cellular respiration is actually the reverse process of photosynthesis. Oxygen is a necessity of life requirements for basically all living organisms.* In this lab we are testing how different levels of salinity in the water indirectly affects the gross primary productivity in aquatic plants. To measure this you would use the light and dark bottle method. Only respiration (R) can occur in the bottle stored in
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Acetic anhydride‚ Salicylic acid‚ Concentrated sulfuric acid‚ Water bath‚ Distilled water ‚ Cold water‚ Hot water‚ Filter paper‚ Ethanol‚ Hot plate and Dry watch glass.
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for several days. FT-IR spectra of Fe3O4‚ mercaptosuccinic acid and mercaptosuccinic acid functionalized Fe3O4 are shown in Figure 1(a-c)‚ respectively. In Figure 1a‚ the sharp band at about 585 cm-1 corresponds to the characteristic Fe–O vibration peak and the bands at around 3420 cm-1 are due to the stretching vibrations of the hydroxyls (–OH) on the surface of the Fe3O4. In Figure 1c‚ the S-H stretching vibrations of mercaptosuccinic acid appears in 2800 cm−1، C-H stretching vibrations appears in
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Problem What do additives – like citric acid‚ sugar‚ salt‚ baking soda‚ cornstarch‚ and powdered milk – do to the strength ̸̸̸density of gelatin? Hypothesis I hypothesize that the higher the density of the additive is‚ the higher strength/density the gelatin will have. The materials you will need for this experiment are; • 2 packs of unflavoured Knox gelatin (1 box) • A pencil/pen and paper to record data • 3 tablespoons of citric acid • 3 tablespoons of sugar • 3 tablespoons of salt • 3 tablespoons
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et al Abstract: The purpose of this lab was to determine how light affected photosynthesis‚ specifically the production of O2 bubbles. It was predicted that when the light was more intense the O2 bubble production will be high. Conversely‚ when the light was less intense the O2 bubble production will be lower. Basically the plant that is closer to the light will produce more bubbles than the plant that is placed farther away from the light source. In this lab the independent variable is the light
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Primary alcohols undergo oxidation to form carboxylic acids in two stages‚ it forms an aldehyde and then to the acid. In this experiment‚ we are used to prepare benzoic acid from benzene. Potassium permanganate is used this operation as an oxidizing reagent‚ it is used to oxidize the benzoic acid as well as acting as a catalyst for the reaction. Potassium permanganate (KMnO4) is a very strong oxidant which is able to react with many functional groups‚ such as secondary alcohols‚ 1‚2-diols‚ aldehydes
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The analysis of reports through human PAX6 Allelic Variant Database (Brown et al.‚ 1998) suggests that more than two third of mutations are associated with congenital eye malformations. Mutations in the PD have been described well but on the HD and transactivation region
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FACULTY OF ENGINBERING AND BUILT ENVIRONMENT BEng (Hons) Civil Engineering Structure I Deflection Contents: Introduction 3 Objectives 3 Apparatus 4 Procedure 4 Results 4 Discussion 7 Conclusion 7 References 8 Introduction: The deflections of a beam are an engineering concern as they can create an unstable structure if they are large. People don’t want to work in a building in which the floor beams deflect an excessive amount
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