Determination of the heat of Combustion of Biodiesel Using Bomb Calorimetry Abstract: In this experiment‚ biodiesel fuel was synthesized from vegetable oil. Biodiesel is considered “green” and better for the environment because it is biodegradable. The heat of combustion was then determined using a bomb calorimeter. Introduction: Petroleum is the largest single source of energy consumed by the world’s population‚ exceeding coal‚ natural gas‚ nuclear‚ hydro‚ and renewables (3). It is predicted that
Premium Petroleum Biofuel Internal combustion engine
amount of energy needed to change one gram of a substance 1 degree C 3. (50 mL)(1.02 g/mL)(4.18 J/g C)(25.3-21.4) = 830 J 4. 830J+8.20J/g C(25.3-21.4)= 860J 5. .25L(.6mol/1L)+.25L(.L/1mol)= 0.3mol AB 830J/.3mol(1kJ/1000J)= 2.7 kj/mol Post 1. Calorimetry is the measure of heat flow. Heat that is measured between the reactants and products. 2. By tracking how close the data is to the best-fit line. Using the best-fit line you can find the initial temperature of the mixture 3. To show the heat
Premium Temperature Chemical reaction Celsius
In the past few decades there has been a revolution in computing and communications‚ and all indications are that technological progress and use of information technology will continue at a rapid pace. Accompanying and supporting the dramatic increases in the power and use of new information technologies has been the declining cost of communications as a result of both technological improvements and increased competition. Today‚ innovations in information technology are having wide-ranging effects
Premium Backup Computer virus
in Chemistry Laboratory Instruction LEARNING OBJECTIVES The learning objectives of this experiment are to. . . ! ! determine changes in enthalpy and entropy of the reaction of zinc with copper sulfate using two methods: electrochemistry and calorimetry. compare the enthalpy values obtained by the two methods. BACKGROUND Thermodynamics is concerned with energy changes that occur in chemical and physical process es. The enthalpy and entropy changes of a system undergoing such processes are interrelated
Premium Electrochemistry Enthalpy Thermodynamics
Joseph Corey‚ Chris‚ Grant Thermodynamics – Enthalpy of Reaction and Hess’s Law I. Purpose The purpose of this lab is to verify Hess’s Law through the three reactions of NaOH and HCl‚ NH4Cl and NaOH‚ and NH3 and HCl. The sum of the enthalpies of the first two reactions should equal the enthalpy of the third reaction. II. Background Hess’s Law is used to determine the enthalpy of a reaction from adding two or more preceding reactions. To determine the enthalpies of certain
Free Enthalpy Thermodynamics Temperature
Medical Cold Packs- Thermochemistry Experiment 2.1 Purpose: To use calorimetry to determine the enthalpy of solution of an unknown salt‚ and then to use that value to identify the salt in the medical cold pack. Materials: See handout Procedure: 1. Acquire two styrofoam cups‚ and cut the top off one of them. 2. Add 80mL of water and record it’s initial temperature. 3. Place 10g of salt into the water and put second on top‚ creating a seal. 4. Record the temperature
Premium Energy Temperature Thermodynamics
secret to prevent interference from third parties. It inhibits third-party software from being installed; it keeps third-party hardware from interoperating with it‚ and it prevents third-party enhancements from improving the product. EXAMPLES: Calorimetry experiments often use a closed system‚ especially bomb calorimeters. Most experiments in chemistry are conducted as closed systems. DIFFERENTIATION BETWEEN OPEN AND CLOSED SYSTEM OPEN SYSTEM: A system that receives inputs of energy and matter
Premium Thermodynamics Open source Systems theory
The biosocial approach (Money & Ehrhardt‚ 1972) is an interactionist approach where by nature and nurture both play a role in gender development. John Money’s (1972) theory was that once a biological male or female is born‚ social labelling and differential treatment of boys and girls interact with biological factors to steer development. They suggested that prenatal hormones are what determine the sex of a child along with the postnatal labels and interactions from agents of society identity. The
Premium Gender Male Female
| Experiment 2 | Calorimetry | | Chemistry 1310 | 7/21/2013 | | This experiment is to calibrate a constant pressure calorimeter to experimentally determine a series of heats of reaction that will be used to predict the enthalpy of reaction for another reaction using Hess’ Law and to determine heats of dissolution for a number of ionic salts that will be used to predict lattice energy again by using Hess’ Law. Heat may increase during experiment and undergo exothermic reaction
Free Thermodynamics Enthalpy Measurement
anti-rodent-added PE compound. Two groups of experiments were planned for this investigation; laboratory experiments including impact resistance‚ tensile elongation‚ environmental stress cracking (ESCR)‚ melt flow rate (MFR)‚ and differential scanning calorimetry (DSC) were carried out on the control (anti-rodent free) and anti-rodent-added PE100 test samples prepared in the laboratory. Also‚ a group of factory tests such as burst‚ hydrostatic (100‚ 165‚ and 1000 hr)‚ slow crack growth (SCG)
Premium Tensile strength Pipeline transport Experiment