Title: Determination of Iron in Natural water by Spectrophotometry. Aim: To determine the iron in natural water by spectrophotometry. Abstract: The iron in natural water was determined by utilizing spectrophotometric analysis. That was done by measuring the absorbance of five Fe(oPH)2+3 standards at 510 nm. From that information‚ a calibration curve was plotted and used to find the amount of Fe2+ that was in two unknown water samples based on the absorbance readings obtained with them at 510nm. The
Premium Electromagnetic spectrum Spectroscopy Light
The Patient Self-Determination Act is a federal law that allows all individuals to make choices regarding their life and death. Each state has some different regulations on this‚ but generally‚ individuals can create a living will so their health will be handled the way they want if they are unable to verbalized or come to a decision when approaching death. He or she could also have a durable power of attorney who the individual entrusts to make health decisions in his or her best interest. Examples
Premium Medicine Death Patient
Date Performed: January 10 & 15‚ 2013 Spectrophotometric Determination of the Equilibrium Constant of a Reaction R.J.V. Ortega and J.C.V. Gatdula Institute of Chemistry‚ College of Science University of the Philippines‚ Diliman‚ Quezon City‚ Philippines Received January 22‚ 2013 ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- ABSTRACT -------------------------------------------------
Premium Chemical equilibrium Concentration Chemistry
Determination of % Composition of Pennies Using Redox and Double Displacement (Precipitation) Reactions Introduction: Oxidation involves the gain of electrons of hydrogen or the loss of oxygen or decrease in oxidation state. If zinc completely reacts with HCL‚ then the theoretical yield of copper should be equivalent to the actual yield. Purpose: In this lab‚ we will determine the percent composition of a modern (post-1982) penny by using a strong acid to react and dissolve the zinc
Premium Chemistry Concentration Chemical reaction
Chemistry 202 – Lab: Wed 2:30 11 April 2012 The Determination of the Heat of Vaporization of n-Pentane Introduction Section: The purpose of the Heat of Vaporization for Normal Pentane (n-pentane) Laboratory Experiment is to determine the heat of vaporization of n-pentane. This experiment was performed as a class. Each pair of partners had to go to the monometer and take the various measurements in order to determine the heat of vaporization. Experimental and Theory Section: PLS (cm)
Premium Thermodynamics Pressure Vapor pressure
Determination of the Calorific Value of Fuels Aim: To quantify the amount of energy produced by different fuels and to determine which fuel is more efficient (has a higher calorific value). Introduction: The easiest way to achieve our aim is by heating a substance with a known specific heat capacity and using the energy released from burning our fuels. This will give us the value of the heat energy released by the combustion of our two fuels. The chemical reaction for combustion: FUEL
Premium Carbon dioxide Energy Fossil fuel
PREPARATION OF ASPIRIN AND DETERMINATION OF THE MELTING POINT Ferrer‚ Lara Melissa V. Faculty of Engineering University of Santo Tomas Manila‚ Philippines ABSTRACT This experiment involved three steps: synthesis of aspirin‚ isolation and purification‚ and the estimation of purity of the final product. The synthesis involved the reaction of salicylic acid and acetic anhydride in the presence of a catalyst‚ phosphoric acid‚ H3PO4. When the aspirin was prepared‚ it was isolated and filtered. The percentage
Premium Aspirin Acetic acid Acetic anhydride
methods to deductively identify compounds (1) . The determination of unknown #6 (2-butanol) was identified by a series of test; first taking the boiling point (94-96 C)‚ performing a solubility test‚ Beilstien test‚ Ignition test‚ and the appropriate functional group tests. An infrared spectrum and an NMR spectrum were then obtained and confirmation of the compound was proved. 2-butanol (sec-butyl alcohol) Introduction: The determination of unknowns is an important skill to organic chemist
Premium Chemistry Atom Temperature
Determination of the %Ethanol Present in Alcoholic Beverages Department of Chemistry‚ University of Santo Tomas‚ Manila‚ Philippines Abstract Given a 25.0 mL commercial alcoholic beverage‚ the group is expected to be able to compute for its alcohol content with the use of their background and recently-taught knowledge of the process of distillation‚ which is the technique that is to be applied for the experiment .Knowing ethanol’s‚ which is the chemical present in all alcoholic drinks‚
Premium Distillation Ethanol Alcoholic beverage
Thermochemistry: An Ice Calorimeter Determination of Reaction Enthalpy D. F. Nachman 6/23/2010 Abstract: An ice calorimeter was used to study the reaction of magnesium metal and 1.00M sulfuric acid solution: Mg(s) + H2SO4(aq) →MgSO4(aq) + H2(g). We found the experimental molar enthalpy of reaction to be ΔH = –355 ± 17 kJ/mol at 0°C‚ 24% lower than the textbook value of ΔH° = –466.9 kJ/mol‚ reported at 25°C. Introduction Whether a chemical reaction occurs spontaneously or is driven by an outside
Premium Energy Enthalpy Thermodynamics