recrystallization‚ and comparing the properties of aspirin with salicylic aspirin. The first thing we did in this lab was make a hot-water bath by putting a beaker with water on a hot plate. After measuring out 2.1 grams of salicylic acid and 3 ml of acetic anhydride‚ we mixed the two together‚ along with 3 drops of sulfuric acid. We then put the flask containing the mixture into the hot-water bath‚ and heated it for 10 minutes. After removing the flask from the hot water‚ we added 2 mL of distilled water. The
Premium Chemical reaction Acetic acid Chemistry
care resources (Brock‚ 1999). There are many criteria that can be used to decide where and how health care related resources should be spent‚ “cost-per-QALY” is one of them that have received considerate academic attention over the last few decades (Alder‚ 2006). As such‚ it is key to investigate if this particular criteria has a legitimate weight in this allocation decision process‚ and if so‚ within which boundaries. To do so‚ in a first section I will briefly define
Premium Medicine Health care Health insurance
Child Development Theories A Comparison of Theories: Freud‚ Adler‚ and Jung The following paper will obtain information based upon three influential men; Sigmund Freud‚ Alfred Adler‚ and Carl Jung. All three with their own theories of being and mental health will be explored. In addition to the basic theories of all three men‚ a comparison will be conducted based on each individual theory. Sigmund Freud was a man that believed in the unconscious mind and sexual impulses. Alfred Adler was
Free Sigmund Freud Carl Jung Psychology
Bibliography: Alder‚ H.‚ “NLP: The New Art and Science of Getting What You Want” Hadley‚ J. and Staudacher‚ C‚ “Hypnosis for Change” Waterfield‚ R.‚ “Hidden Depths”
Premium Self-esteem
UN 1076 – Phosgene HAZARDS: Phosgene is a highly toxic‚ irritating and corrosive gas. Inhalation can cause fatal respiratory damage. Phosgene reacts violently and decomposes to toxic compounds on contact with moisture‚ including chlorine‚ carbon monoxide and carbon tetrachloride. In case of skin contact: If liquid phosgene (below 8.2 deg C) contacts the skin or clothing‚ an inhalation exposure should be suspected. Hazards due to skin contact with the gas is unknown. Phosgene does‚ however‚ react
Premium Oxygen Carbon dioxide Gasoline
dehydration of an alcohol. Cyclohexanol‚ the reagent of this experiment‚ is used in the production of nylon‚ paints‚ plastics‚ detergents‚ textiles and pesticides whereas Cyclohexene itself is used in manufacturing of adipic acid‚ hexahydrobenzoic acid‚ maleic acid‚ cyclohexanol and cyclohexeneoxide. In this experiment cyclohexanol is dehydrated to prepare cyclohexene while using sulfuric acid as a catalyst. The mixture of cyclohexanol with sulfuric acid is heated in a flask equipped with a fractionating
Premium Distillation Sodium hydroxide
plastic like odor. Miscibility test shows that all of the organic compounds are immiscible and all are flammable. Tests for active unsaturation indicate that hexane‚ heptane‚ cyclohexane‚ benzene and toluene are saturated while cyclohexene is actively unsaturated. Hexane‚ heptane‚ benzene‚ and toluene are classified as aliphatic while cyclohexane‚ and cyclohexene are aromatic. All are not oxidized except for cyclohexene. I. Introduction Hydrocarbons are compounds
Premium Benzene Hydrocarbon Carbon
constant mass. The percentage of moisture content can be determined by performing some simple calculations. Another method is‚ distillation method (dean & stark). A known weight of food is placed in a flask with an organic solvent such as xylene or toluene. The organic solvent must be insoluble with water‚ have a higher boiling point than water and less dense than water. (Faichney‚ G.J. and G.A.
Premium Analytical chemistry Food Arithmetic mean
be synthesised by reacting 4-aminophenol in acetic anhydride and this is often the first stage of preparing a medicine. This experiment aims to prepare a sample of paracetamol and assess its quality and purity as this need to be checked before it can be formulated into a medicine. 1.2 Method 5.10g of 4- Aminophenol was suspended in water‚ in a quick fit (QF) round bottomed flask in the fume cupboard as 4 – aminophenol is toxic. Ethanoic anhydride (toxic vapor) was added and mixed by swirling and a
Premium Acetic acid Acetic anhydride Laboratory glassware
intermolecular forces must be overcome in converting each of the following from a liquid to a gas? (a) CO2; (b) NH3; (c) CHCl3; (d) CCl4. 57. Toluene‚ C6H5CH3‚ is a liquid used in the manufacture of TNT. Its normal boiling point is 111.0°C‚ and its molar heat of vaporization is 35.9 kJ/mol. What would be the vapor pressure (torr) of toluene at 75.00°C? 73. ▲ ■ (a) How many triple points are there for sulfur? (b) Indicate the approximate pressure and temperature at each triple point
Premium Concentration Water Vapor pressure