Endothermic

increases with high temperature and more agitation (stirring). The less the solution is stirred or if there’s a decrease in temperature, the solution becomes less soluble and forms a solid at the bottom of the solution. The forward reaction is endothermic because the deltaHrxn was positive, meaning that the solution was absorbing heat rather than releasing heat. An increase in Kc shows the increase of solubility in borax solution. If there’s a decrease in Kc values, that means there is a…

Magnesium Chloride as a Deicer Emily Lekah Fall 2015 CHEM 1066 October 15, 2015 University of Minnesota Abstract The purpose of this experiment was to evaluate magnesium chloride as a deicer. To be a good deicer, a salt must be able to lower the enthalpy when is mixed with water. This will cause an exothermic reaction and release heat. This experiment had three tests performed within it, The freezing point depression, the enthalpy of dissolution, and finding…

1. Brief history of the company/factory ? In 1930, Dr. Minoru Shirota, who was conducting research in a microbiology lab at the Medical Faculty of Kyoto University in Japan. He succeed in culturing a strain of lactic acid bacteria beneficial to human health. This bacterium was named "Lactobacillus casei Shirota strain. It took Dr. Shirota another 5 years of research to find the right food medium for the Lactobacillus casei Shirota bacteria. In 1935 the first bottle of Yakult, a fermented…

A group of biologists have developed a general model to explain growth and development in ectothermic organisms. Changes in environmental temperatures effect the rates of most biological reactions and biological processes in ectotherms. The rates of ontogenetic growth and development are no exceptions. Ectothermic animals develop faster at warmer temperatures and they usually mature at smaller body sizes. This phenomenon has been called the temperature size rule (Zuo et Al. 2011). The…

exponent (slope in log-log plot). (Glazier 2014). Before Keiber published his theory on size, Rubner observed the scaling exponent b was 2/3 in his work of dogs of different sizes. .According to his theory, to maintain a constant body temperature, endothermic animals must metabolically produce enough body heat to exactly balance the amount of heat lost through their body surface, and since the body surface scaled as M^(2/3) so should metabolic rate (Glazier 2014). Max Kleiber then published in…

3.0 Results and Discussion Figure 1 shows the infrared spectrum for both crosslinked and non-crosslinked films. Both carrageenan and vanillin contain similar functional groups such as CH4, C=O, C-O-C, C-OH. There is no significant difference in the spectrum that can be detected for crosslinked and non-crosslinked film samples. The spectrum can be divided into upper and lower spectrum. In the upper spectrum for the region of 2000 – 3600 cm-1, O-H stretching (3100 – 3600 cm-1) and C-H stretching…

organisms. The tertiary structure of the membrane is comprised of a lipid bilayer. The amphiphilic phospholipid molecules create an impermeable membrane through hydrophobic interactions. When organic molecules are placed in a polar environment, an endothermic reaction occurs that decreases the entropy of the system (ΔS). Hydrophobic interactions compensate for the decrease in entropy by “clumping” nonpolar molecules together. The orientation of the lipid tails inward creates a membrane with a…

Domain: Eukarya Giant Pandas belong in this domain as they are composed of eukaryotic cells that have a specific task or function in the body. They are larger cells that possess membrane- bound nucleus and membranous organelles (including endoplasmic reticulum, Golgi apparatus, chloroplasts, and mitochondria). Like a prokaryotic cell, they also possess a plasma membrane, cytoplasm and ribosomes. Aksi giant pandas perform cell division through mitosis and reproduce sexually through meiosis.…

Marwah Alabbad Qualitative aspects of Equilibrium Post lab 10/7/15 1. Tables in experience 1: A. Test tube 0.5M HNO3 (mL) Drops of Potassium thiocyanate Drops of Ferric nitrate Observation (color) A 0.5 mL 1 1 Light orange B 0.5 mL 1 9 Vibrant orange( medium) C 0.5 mL 5 5 Vibrant red D 0.5 mL 9 1 Dark shade of orange E 0.5 mL 9 9 Dark red B. Removing Fe3+ Test tube 0.5M HNO3 (mL) Drops of Potassium thiocyanate Drops of Ferric nitrate 1% NaOH (mL) Observation F 0.5 mL 5 5 - The color has…

the amount of heat involved in a chemical or physical process. For example, when an exothermic reaction occurs in solution in a calorimeter, the heat produced by the reaction is absorbed by the solution, which increases its temperature. When an endothermic reaction occurs, the heat required is absorbed from the thermal energy of the solution, which decreases its…