when tested by dropping a marble from a constant height into the glycerin (l) and timed with a stopwatch until the marble hits the bottom? Design Independent Variable: The independent variable of this experiment is the temperature (°C) of the glycerin (l). Dependent Variable: The dependent variable of this experiment is the viscosity s -1 of the glycerin (l). Controlled Variable(s): The controlled variable(s) are: the liquid used‚ the marble used‚ the distance the marble is dropped‚ the volume (mL)
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IGSCE Chemistry Notes Oxides Oxides are used to determine whether an element is a metal or a non-metal. Most non-metals are classed as acidic oxides. While most metals are classed as basicoxides. Acidic Oxides * Reacts with water to form acids * Neutralises alkaline solution to form salt + water Basic Oxides * Neutralises acidic solutions to form salt + water Amphoeteric Oxides * These are non-metals which display both acidic and basic properties Alkaline Oxides * Reacts
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Are BHA and BHT bad for you? Cassandra Moore Chemistry 102 Professor Kittredge 2011 The foods we consume can have different kinds of compounds in them that we didn’t know about. These compounds added to the foods we eat are not always detectable. For instance certain compounds can be listed on the nutrition label and we can’t even taste or see them. Butylated hydroxyanisole and butylated hydroxytoluene‚ also known as BHA and BHT‚ are both phenolic compounds that are added to certain foods
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thermodynamically favourable?). • However‚ chemical thermodynamics hasn‟t answered the question “HOW FAST will a specified chemical reaction occur?” o Many thermodynamically favourable reactions are so slow (ex: metamorphic transformation of rocks‚ corrosion of marble sculptures owing to weathering) that they can be considered not to happen! Derivation of equilibrium constant (gases) Consider the following reaction‚ where reactants (A‚ B) and products (C‚ D) are all gases: ?? ? + ?? ? → ?? ? + ?? ? (where ?‚ ?
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CuSO4||Pale blue color. Extremely small and light blue solids at the bottom of the solution. Heterogeneous| Part F: Testing of Various Foods with the NaOCl + KI solution Foods|Presence or Absence of Starch| Chocolate pudding|No reaction| Chocolate chip cookie|Soaked through the cookie‚ no reaction| Banana|No reaction| Pasta noodle|No reaction| Organic blackberry|No reaction| Blueberry|No reaction| Cherry/cheese Danish|No reaction| Part 2: Household Chemicals with Bromthymol Blue Use the
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magnesium continues to burn in nitric oxide while burning Sulphur extinguishes. xxiii) Phosphorous does not form phosphorous penta-iodide. xxiv) Phosphorous acid is a dibasic acid. xxv) (SiH3)3N is a weaker base than (CH3)3N. xxvi) Mg3N2 when reacted with water gives off NH3 but HCl is not obtained from MgCl2 on reaction
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circulation via its own network of arteries or veins. Instead‚ blood and nutrients diffuse through the cartilage to the extent that they are pushed through the material by movement and pumping action. This makes cartilage the slowest tissue to grow and‚ when damaged‚ the slowest to repair itself. Bones can be found throughout the human body as basic structural components providing form to the body and protecting internal organs such as the rib cage. The human body contains 206 bones‚ and more in
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Within the 1950s the prevalent family was a two parent family‚ both mother and father. In this duration separate families were unprecedented proximately as in the event that it was illicit to be discrete. It felt this way since the way society was‚ numerous didn’t require the mortification of being dissevered and mainly women were perplexed to induce disunited. You were anticipated to induce hitched and remain hitched no matter how hopeless life was for you‚ since separate was an ignominiously. Back
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DETERMINATION OF SAPONIFICATION AND IODINE NUMBERS OF SOME LIPIDS A.L. ASCANO1 C.V. OPONDA1 1INSTITUTE OF BIOLOGY UNIVERSITY OF THE PHILIPPINES‚ DILIMAN‚ QUEZON CITY‚ PHILIPPINES DATE PERFORMED: FEBRUARY 19‚ 2013 INSTRUCTOR’S NAME: FRANCESCA N. BELTRAN _____________________________________________________________________________________ ABSTRACT _____________________________________________________________________________________ INTRODUCTION Lipids are long aliphatic hydrocarbon chains
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Contents Introduction and Aims 3 - Hypothesis 1 4 - Hypothesis 2 5 - Location map Method 6 - Field sketch 7 - River mapping‚ Cross section 8 - Velocity 9 - Method Limitations Data Presentation 10 - River mapping table 14 - River mapping 15 - Meander cross section results data set 1 16 - Straight cross section results data set 1 17 - Velocity/depth graphs for data set 1 18 - Meander cross section results data set 2 19
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