January 2008 Examiners’ Report NEBOSH National Diploma in Occupational Health and Safety E xaminers’ Report N EBOSH National Diploma in O ccupational Health and Safety J anuary 2008 examinations C ONTENTS Introduction 2 Unit A – Managing health and safety 3 Unit B – Hazardous agents in the workplace 12 Unit C – Workplace and work equipment 21 Examination technique 28 © 2 008 NEBOSH‚ Dominus Way‚ Meridian Business Park‚ Leicester LE19 1QW t el: 0116
Premium Occupational safety and health Accident
LABORATORY REPORT FOR BIO411 Experiment 5 : Cellular Respiration Experiment 6 : Photosynthesis Title: Cellular Respiration Objective: To observe and determine cellular respiration in yeast/onion cells. * Measure respiration rate using different substrates. * Measure respiration rate at different temperature. Introduction: In this laboratory experiment‚ we are given 3 task. The first one is respiration in yeast. Second is respiratory indicator and the third one is observing
Free Carbon dioxide Oxygen PH
chemicals from the alcohol family. Mostly ethyl alcohol (ethanol‚ EtOH)‚ other alcohols are usually present only in small quantities‚ notably consumable t-Amyl alcohol (t-Amylol‚ t-AmOH) which is about 20X more potent than ethanol‚ and hazardous methanol with much weaker sedative effect than ethanol‚ thus are not prohibited by law or regulated by taxation in most if not all countries. However‚ alcoholic beverages are divided into three general classes for taxation and regulation of production: beers
Premium Alcoholic beverage Benzodiazepine Ethanol
formula for the alkanoic acid and the alcohol formed from the breakdown of methyl butanoate. 2PS 2. Ethanoic acid is more commonly known as vinegar. a) Draw the structure of ethanoic acid.1KU b) Ethanoic acid can be reacted with methanol to form an ester‚ which is used
Premium Ethanol Acetic acid Oxygen
This indicates the presence of impurities in the solid product. These impurities could be leftover reagents that never reacted or leftover methanol that was not dried out. The presence of these molecule most likely lowered and broadened the melting point range. Similarly‚ the percent yield of 49.4% is not a very high and productive value. The mediocre yield could have resulted from many mistakes
Premium Benzene Hydrogen Oxygen
O2(g) →CO2(g)‚ ∆H= -394kJ/mol H2(g) + ½ O2(g)→H2O(l)‚ ∆H= -286 kJ/mol (i) Calculate the ∆Hf of methane given its ∆Hc is – 895 kJ/mol. (ii) Calc. the ∆Hf of ethanol given its ∆Hc is -1400 kJ/mol. (iii) Calc. the ∆Hc of methanol given its ∆Hf is -239 kJ/mol. (iv) Calc. the ∆Hf of Carbon Monoxide ‚given its ∆Hc is -284 kJ/mol. (v) Calc. the ∆Hf of carbon disulphide‚ given: S(s) + O2(g)→SO2(g) ‚ ∆H = -294 kJ/mol CS2(l) + 3O2(g)→CO2(g) + 2SO2(g) ∆H = -1072 kJ/mol 6. Use
Premium Energy Enthalpy Carbon dioxide
Questions 1. Data in Lab #4‚ Experiment 3C will be analyzed in two different graphs. One of the graphs containing your own data and the other containing the class data. 2. The liquid in this experiment that is flammable as well as poisonous is Methanol. 3. The two variables that will be being measured are mass and volume. To measure the volume‚ a buret and 250mL Erlenmeyer Flask. To measure the mass‚ a scale and an Erlenmeyer Flask will be used. 4. It is important to the class that accurate
Premium Chemistry
solidify.* Collect the crude product using Hirsch funnel and record the crude yield of the product. Filter‚ wash well with cold water and re-crystallize several times from hot methanol/water (3:4) mixture until the mp is constant. Record the melting point. *If solidification is not resulted: Dissolve the oily residue in hot methanol/water (3:4) mixture (heat on steam bath) and then allow it to stand at room temperature for crystals to form. If time is not allowed‚ label the container for crystallization
Premium Acetic acid Carboxylic acid Nuclear magnetic resonance
Partitioning of organic acid food preservatives between oil and water Olaya Iturbe Navalpotro Student of Food National Institute -DTU Technical University of Denmark Index 1. Introduction …………………………………………………………..pg. 2-4 2. Theoretical background……………………………………………….pg. 5-18 2.1. Preservatives (Sorbic acid and Benzoic acid) 2.2. Solubility and partitioning of food preservatives in food system 2.3. Measurements of the preservatives partitioning in oil-water system 2.4. Influences of
Premium Acid dissociation constant PH Carboxylic acid
Shahadah Williams Case Report Introduction: At 4:30 pm‚ April 26‚ 2013 Detective Shi Henry called asking for assistance in processing a suicide victim‚ involving a 39-year-old female at the corner of Midland and Colvin Street. Victim name is Ariel Travis. Me (Shahadah Williams) and my Crime Scene Search Team Jim Carey and Will Ferrell arrived approximately 15 minutes after the phone call. I’m a forensic technician with 12 years of experience‚ and a bachelor degree in forensics. Upon arrival I
Premium Fingerprint Forensic evidence Finger