Endothermic

m=mass, c=specific heat, ΔT= final temperature- initial temperature. Different materials have different specific heats because some bonds between atoms are stronger than others and need more energy to break them. How do you distinguish between endothermic and exothermic reactions and

experiment. The reaction between cyclic diene and a cyclic dienophile react in a way that allows more than one stereoisomer to be formed. One way the reaction can go is endothermic and other is exothermic. In this reaction the transition state for formation of the endothermic is favored over the exothermic in the product. The endothermic is the major product, because the overlap of the pie electrons are

with an Atlantic distribution from Newfoundland (Canada) to Norway in northern latitudes down to South Africa and Northern Argentina in the south hemisphere. Known to be the fastest shark in the world and probably one of the most active, this endothermic shark is common in the epipelagic realm (up to 600 m depth) in waters of 17 to 22°C temperature (Compagno 1984, 2001). The mako shark is one of the most important captured shark species for open ocean pelagic fisheries, targeted in commercial tuna

In this report 3 three fuels, ethanol, 2-Pentanol and 2-butanol were tested to determine the experimental heat of combustion and to decide which fuel be the best to take on a camping trip. Combustion is a complex chemical process in which a substance reacts rapidly with oxygen accompanied by the production of heat. (Grc.nasa.gov, 2015). The original substance is called the fuel and the oxygen is called the oxidizer. Along with heat, CO2 (carbon dioxide) and H2O (water) are created as byproducts

Name: Date: Graded Assignment Unit Test, Part 2 Answer the questions below. Unless otherwise instructed, you may use a scientific calculator for this test. When you have finished, submit this assignment to your teacher by the due date for full credit. (5 points) Score 1. Nitroglycerine (C3H5(NO3)) is a powerful explosive. The products of this reaction are elemental oxygen, elemental nitrogen, water, and carbon dioxide. The Gibbs free energy for this reaction is negative at 273 K. Determine whether

Cold pack is a first aid device that used to relieve pain, swelling, and inflammation from injuries and other conditions, such as arthritis. The cold pack usually contain two plastic bags with one contains an ionic compound and the other bag contains water. The design of the ice pack is to make it small enough to fit in a first aid kit, but still be inexpensive and effective. In this experiment, the purpose was to find out which salt and in what quantity should be used to make an effective but the

A biofuel is a renewable fuel that is produced from vegetable and animal fats. The process that converts these oils into fuel is known as transesterification or esterification. in transesterification, the fatty acids and triglycerides that are within animal and vegetable oils react with methanol with a catalyst such as sodium hydroxide which results in the formation of fatty acid methyl esters. Structurally, both biodiesel and petrodiesel contain hydrogen and carbon atoms, however petrodiesel is

Step 3 Color change (and observations). Blue, the more HCl added, the more blue the chemical has gotten, along with being warmer Step 5 Color change (and observations). Pink, slowly turning from the top to the bottom. Step 6 Color change (and observations). The test tube from step 5 is turning blue, and the one from step 3 stays to blue. Step 7 Color change (and observations). The test tube from step 5 is going to be pink, and the one from step 3 turn pink. Step 8 Color Change (and observations)

lower enthalpy since there is less heat and energy. A lower temperature would make the enthalpy even more negative for a process that gives off heat, like NaOH. A lower temperature would result in an enthalpy change that is closer to zero for an endothermic reaction like KCl. However, the enthalpy of the solution would increase if heat entered the cup. This is because the heat going in the cup raises the temperature of the cup's surroundings. The heat generated by the system and the heat from the environment

Warm Blooded Versus Cold Blooded Dinosaurs               At a time, scientists believed all dinosaurs were cold-blooded.  However, with a recent discovery of a dinosaur found with a fossilized heart in the northern part of South Dakota in 1993, many paleontologists are starting to think that there were some dinosaurs that were warm blooded.              Dinosaurs were first believed to be cold-blooded because they were thought to be related closely to reptiles which are cold-blooded creatures