thing in automotive fuel may very well be hydrogen. Automakers rapidly are closing in on making hydrogen fuel cell vehicles an everyday fact of life‚ with several test models set to debut over the next few years. Hydrogen fuel cells to power vehicles are desirable‚ experts say‚ because hydrogen is a renewable fuel that can be used to create electricity to run cars. A chemical reaction between oxygen and hydrogen produces the electric power‚ and when pure hydrogen is used‚ the only emission from the tailpipe
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31) QUALITY OF DRIED FOODS AND DETERIORATIVE REACTIONS DURING DRYING Consumer demand has increased for processed products that keep more of their original characteristics. In industrial terms‚ this requires the development of operations that minimize the adverse effects of processing. The effect of food processing on finished product quality ultimately determines the usefulness and commercial viability of that unit process operation. In the particular case of food drying this indicates that loss
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Letters 2013‚ Volume 1‚ Issue 1 A Perkin Reaction: Synthesis of (E)- and (Z)-Phenylcinnamic acids Thusanth Jogarajah‚ Dr. Lana Mikhaylichenko * Department of Physical and Environmental Sciences‚ University of Toronto Scarborough‚ 1265 Military Trial‚ Scarborough‚ ON‚ M1C 1A4 Received: February 6‚ 2013; E-mail Thusanth.Jogarajah@mail.utoronto.ca Abstract – Add text here Introduction: The name of this reaction is called the Perkin’s reaction. The reaction was first used by William Perkin to
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Investigating the Limits of Cell Growth Background: To find factors that limit cell growth In multicellular organisms‚ In order for an organism to grow cells must divide through mitosis. Cell division happens after the cell is big enough so the daughter cells will be replicated without any flaws. The regulation and amount of materials that can enter and leave the cell is based on how large the cells surface area is. The rate of movement is also determined by the volume of the cell. Many factors like
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equation‚ (c) net ionic equation for this neutralization reaction: KHSO4 (aq) + NaOH (aq) → ? 2. In each of the following cases‚ predict whether a reaction will occur‚ and‚ if so‚ write the net ionic equation for the reaction: a. ZnSO4 (aq) + BaS (aq) → ? b. NaHCO3 (aq) + Ca(OH)2 (aq) → ? 3. Assign an oxidation number to each atom in: a. Al2O3 b. HAsO42c. NaMnO4 4. Identify the reducing agent and the oxidizing agent in the following reaction: MnO4- + 5 Fe2+ + 8 H+ → Mn2+ + 5 Fe3+ + 4 H2O 1
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On Thursday‚ September‚ 28 in Ms. O’Brien’s Honors Science class we conducted two experiments the Mixed Substances Lab and the Investigating Mixtures Lab. The objective of the Investigating Mixtures Lab was “To observe that not all liquids behave the same way when mixed with other liquids”. Before we started the lab we we each created a hypothesis mine was “If the water and vegetable oil are mixed and the two combine and make a mixture‚ then the vegetable oil will float and the water will sink”.
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Investigating the resistance of a wire. Planning For this investigation there are a number of variables that can be chosen to change or keep the same‚ these are: · Length of the wire. · Diameter of the wire. · Type of the wire. · Temperature of the wire. Scientific explanation. All electrical conductors resist current through them to some extent. This is resistance and this affects the size of the current flow. The main dependence of resistance are: § It’s Length. § It’s Thickness
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Title: Surface Area vs. Rate of Reaction Research question: How can different temperatures affect the rate of reaction‚ when the reactant is in powder form? Hypothesis: If the temperature of the water is increased‚ the rate of reaction will also increase as the heat given off to the particles will increase leading to more movement and frequent collisions. Background information: Chemical reactions occur when two or more molecules interact with each other‚ but that can only occur when they
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Ionic Reactions Introduction: Today we are going to observe the chemical changes when mixing two solutions. Some will change colors‚ produce gases proving if the solutions are soluble or insoluble. Materials and Methods: I first pulled out the small wells and place two drops of the Cobalt (II) Nitrate in seven of the wells. I then moved to the next row and placed two drops of Copper (II) Nitrate in the next row‚ into seven of the wells‚ and so on with the other three Nitrates. I then cut off
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Chemistry Write-Up The Thermal Decomposition of Sodium Hydrogen Carbonate Aim: When Sodium Hydrogen Carbonate (NaHCO3) is heated‚ Carbon dioxide and water are given off to leave a white powder. The aim is to find the equations for this reaction. Hypothesis: The experiment will prove which of the equations below is true. It will tell us whether Sodium Carbonate is produced or Sodium Oxide. 2NaHCO3 Na2CO3 + CO2 + H2O 2NaHCO3 Na2O + 2CO2 + H2O Variables: Independent: Original
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