CROATICA CHEMICA ACTA CCACAA 78 (1) 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
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Behavior of Gases and Absolute Zero Determination Lab Report Experiment 4 Introduction In this experiment we measured the relationship between temperature‚ volume‚ and pressure. Objectives: Conduct a set of experiments‚ each of which illustrates a gas law. Gather data to identify the gas law described by each activity. Complete the calculations necessary to evaluate the gas law in each activity. From your results‚ derive a single mathematical relationship that relates pressure‚ volume‚ and
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Engineering Laboratory (Lab) Report Department of Engineering Faculty of Engineering and Science‚ University Tunku Abdul Rahman (UTAR) 1. Introduction Laboratory (Lab) reports are the most frequent document written by engineering student. These reports can contribute a significant amount of marks and yet little time or attention is devoted in understanding on how to write them well. The aim of this document is to provide a general guideline on writing a lab report. A lab report should not be
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for razor blades (is it?)‚ or that your SSN is higher than mine ( is it?) tells us nothing. In surveys they often use arbitrary numbers to code variables such as religion‚ ethnicity‚ major in college or gender. In fact‚ with nominal variables measurement means: classifying cases in (unordered) groups. (A group can have a single member‚ as it is the case with SSN.) The groups must be --- all-inclusive: they must cover all cases --- mutually exclusive: each case must belong to one and only one group
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mm2______________ Volume ___3920 mm3________ C) Your lab kit box lid: (in centimeters) Length _____40 cm________ Width ____35 cm_________ Area ________1400cm2_______ Volume ____11200cm3________ 4) Determine the mass of the objects listed below (in grams). Pay attention to the units. Since you do not have a metric scale‚ we will provide you data to work with. A) Baseball Mass (measurement 1): ____.145__kg Mass (measurement 2): ____145.05_ g Mass (measurement 3): 145‚750.77 mg Mass (average): __________g
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Osmosis Lab Research Question: In this lab‚ our goal was to look at the effects of different sucrose concentrations on osmosis in potatoes. Our research question was “How do the sugar levels affect the rate of osmosis in potatoes?”. Background Information: Solutions consist of solutes dissolved in a solvent. In all living organisms there are many different types of solutes including salts and sugars. The major solvent is water. There are different concentrations of solutes in various regions
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INTRODUCTION Biodiversity presents occurrence of variety of species and their natural community in which they live. By the definition it is “The degree of variation of life forms within a given species‚ ecosystem‚ biome‚ or an entire planet. It is a measure of the health of ecosystems and is in part a function of climate.” (Rutherford) Ecosystem is on the other hand‚ “ community and its abiotic environment”( Rutherford). Biodiversity exists in every ecosystem‚ weather it is big one‚ or just ecosystem
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ABSTRACT: The lab of one dimensional motion is a series of experiments that deal with different types of motion in a single direction. In the first experiment‚ one dimensional motion of a small cart on an air track is measured in a one photogate system. The acceleration was calculated by the infrared light emitting electrode of the photogate sensing the slacks on the picket fence. The calculation for gravity yielded 9.63 m/s^2‚ which is consistent with the accepted value of 9.8m/s^2. In the
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LAB ACTIVITY 1 MEASUREMENTS IN SCIENCE: MASS‚ VOLUME‚ AND DENSITY Purpose: The purpose of this experiment is find the density of two metals using their mass and volume. Introduction: The purpose of the experiment that was conducted was to measure and calculate the density of two different metals. Density is an important characteristic of a material. The density of an object shows how much mass is contained in the unit volume. To calculate the density of metals the experimenters had to find
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Biology Laboratory Report MEASURING RATE OF WATER UPTAKE BY A PLANT SHOOT USING A POTOMETER Introduction All plants need salts minerals‚ water‚ CO2 and O2. To fulfill their requirements different plants use different ways. Lower plants use diffusion‚ however higher plants use vascular tissue that is located in the middle of the root and in the vascular bundles in the stem. The transpiration is the important process in the plant. The main reason is that transportation
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