SEPERATING CYCLOHEXANE AND TOLUENE BY DISTILLATION Aim: Separate two miscible liquids‚ either by macroscale or microscale process‚ using simple and fractional distillation. Compare the efficiencies of simple and fractional distillation. INTRODUCTION: The purpose of this experiment is to learn how to separate two miscible liquids by microscale process. There will be use of simple and fractional distillation. Simple and fractional distillation efficiencies will be compared. The student should have
Premium Vapor pressure Temperature Gas
% iSu dkMZ la[;k BQMPD5288G fujLr djus ds laca/k esa izkFkZuk i= egksn;] esjk iqjkuk iSu dkMZ la[;k AFAPD0254N iwoZ esa vpkud ?kj ij gh [kks x;k Fkk ftl otg ls eSaus tkudkjh ds vHkko ds dkj.k nwljk iSu dkMZ izkIr djus ds fy‚ vkosnu fd;k Fkk rFkk eq>s u;k iSu dkMZ la[;k BQMPD5288G yxHkx ‚d ekg iwoZ tkjh gks x;k Fkk A fdUrq vc vpkud esjk iqjkuk iSu dkMZ ?kj dh lQkbZ djrs le; fey x;k gS vr% vkils fouez fuosnu gS Ñi;k esjk u;k iSu dkMZ dks fujLr djus dh Ñik djsa ftls eSa bl i= ds lkFk layXu dj
Premium Agra Delhi Cheque
Experiment 12 Calorimetry and Heat of Reactions ____________________________________________________________________________________________________________ PERFORMANCE GOALS: 1. To learn how to use of a calorimeter 2. To learn how to collect and manipulate data in the computer 3. To calculate the calorimeter constant 4. To use Hess’ Law to find the heat or formation of magnesium oxide CHEMICAL OVERVIEW: • Enthalphy: (ΔH) : when chemical or physical changes occur at a constant
Free Enthalpy Thermodynamics
exchange Acid-base reaction in natural waters Precipitation and dissolution in natural waters + Properties of water + Thermodynamics of water + Property of water: Thermodynamics Bond enthalphy : ΔH OH= 463‚5 kJ/mol Hydrogen bond ΔHH---OH = 10-40 kJ/‚mol Ice: hydrogen bond intact‚ low density (floats) 0oC: 12% Hydrogen bond broken 4oC: hydrogen bond broken‚ density higher 4-100oC: Hydrogen bond broken until 20% but greater kinetic energy causing thermal expansion thus density
Premium Oxygen Carbon dioxide Water
THIS IS A NEW SPECIFICATION H Monday 21 May 2012 – Morning GCSE GATEWAY SCIENCE BIOLOGY B B731/02 Biology modules B1‚ B2‚ B3 (Higher Tier) * 1 0 2 5 9 6 6 0 1 1 * Candidates answer on the Question Paper. A calculator may be used for this paper. Duration: 1 hour 15 minutes OCR supplied materials: None Other materials required: • Pencil • Ruler (cm/mm) * B 7 3 1 0 2 * MODIFIED LANGUAGE INSTRUCTIONS TO CANDIDATES • • • • • • Write your name‚ centre number and candidate number in the boxes
Premium Allele Question Cell
Write your name here Surname Other names Centre Number Candidate Number Edexcel GCE Physics Advanced Subsidiary Unit 1: Physics on the Go Friday 11 January 2013 – Afternoon Time: 1 hour 30 minutes You must have: Ruler Paper Reference 6PH01/01 Total Marks Instructions Use black ink or ball-point pen. Fill in the boxes at the top of this page with your name‚ centre number and candidate number. Answer all questions. Answer the questions in the spaces provided
Premium Compressive stress Bone Osseous tissue
Mechanics Revision Exercise Q1. Which of the following is/are the direct implication(s) of Newton’s first law? (1) A boy standing on a bus is ’pulled’ backwards when the bus starts moving. (2) On a smooth surface‚ when you push another person in front of you‚ you will move backwards. (3) The balls of different masses reach the ground at the same time in Galileo’s experiment (carried out on the tower of Pisa). A (1) only B (2) only C (3) only D (1) and (2) only Q2. Two objects‚ connected by a
Free Force Mass Classical mechanics
CHAPTER 4: ENZYMES Enzymes are biological catalysts. There are about 40‚000 different enzymes in human cells‚ each controlling a different chemical reaction. They increase the rate of reactions by a factor of between 106 to 1012 times‚ allowing the chemical reactions that make life possible to take place at normal temperatures. They were discovered in fermenting yeast in 1900 by Buchner‚ and the name enzyme means "in yeast". As well as catalysing all the metabolic reactions of cells (such as respiration
Premium Enzyme Enzyme inhibitor
CHAPTER 5: PERIODIC TABLE Development of the Periodic Table • i) Substance exist: naturally in elemental form Example: Gold‚ Uranium as unstable compound Example: Radioactive compounds as stable compound (majority) How to know whether a substance is a compound OR an element? ii) iii) • • • Grouping system: 1800: 31 elements identified 1865: 63 elements identified Audi Majdan – DMC 101 – KLIUC 1 • Dmitri Mendeleev: i) ii) iii) iv) Develop a system to group
Free Periodic table
gerati Laboratory report Vapour-Compression Refrigeration Experiment Thermodynamics Date of experiment: 26 June 2012 Group D2: Introduction The laboratory session for refrigeration system was performed in order to investigate the main concepts of the vapour-compression refrigeration cycle. Simple refrigeration system studied in the laboratory is a prototype for a variety of engineering applications utilized in industrial‚ domestic and scientific purposes. The detailed goals include the study
Premium