C3H7OH(l) + 4 O2(g) → 3CO2(g) + 4H2O(l) [3] d) State how you would expect the value obtained in part (c) to differ if gaseous water‚ rather than liquid water‚ is formed. [1] e) In an experiment 0.92 g of propan-1-ol‚ C3H7OH‚ was burned and the heat given off used to raise the temperature of 250 g of water. The temperature rise was 16 °C. The specific heat capacity of water is 4.2 JK–1 g–1. Calculate a value for the enthalpy of combustion of one mole of propan-1-ol. [4] f) Suggest
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A) salt B) sleep C) cold D) heat E) temperature Answer: A 3) One example of a chemical used in toothpaste is ________. A) chlorine B) sulfur C) carbon dioxide D) calcium carbonate E) sugar Answer: D 4) Which of the following is not a chemical? A) salt B) water C) light D) carbon dioxide E) sugar Answer: C 5) Sodium monofluorophosphate is a chemical used in toothpaste to ________. A) make the paste white B) disinfect
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Angela Pierre Chem 112 Lab Due: 03/05/2015 Lab Report 14 Questions 1. Part A.3. Some of the cyclohexane solvent vaporized during the temperature versus time measurement. Will this loss of cyclohexane result in its freezing point being recorded as too high‚ too low‚ or unaffected? Explain. -The freezing point will be higher because the loss of solvent means that the molarity of solute is too high. The melting point will be lower than expected. 5. Part B.2. The solute dissociates slightly in the
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Labset Three Worksheet 1. What is a carbohydrate profile? Why are they used as a diagnostic or identifying tool? (2) Carbohydrate profiles are specific information on the type and amount of carbohydrate that a product contains. It is used to identify and differentiate two closely related species. 2. What are the carbohydrate profiles of the organisms you tested? (2) The yeast carbohydrate profile came out with glucose and fructose positive and Mannitol negative. The staph epidermidis
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elements were named regarding their taste or odor? Sweet (Latin) Odor (Greek) Stench (Greek) What elements were named after the following places? Berkeley‚ California State of California The Americas France (2 elements) Poland Ytterby‚ Sweden (4 elements) Cyprus Russia (Latin) Europe Stockholm‚ Sweden Germany Scandinavia Rhine river Strontian‚ Scotland a) b) a) b) c) d) Can you name the elements derived from the following colors? yellow "absenikon" (Greek) white "buraq"
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Ammonia is produced using the Haber process: 3H2 + N2 > 2NH3 15 kg of each What mass of ammonia could be produced from 15.0 kg each of H2 and N2? Assume the reaction goes to completion • H = 1.008 g/mol • N = 14.01 g/mol = 1.82 x 10^4 • 15 kg H2(1000 g/1 kg)(1 mol H2/2.0)(2 mol/3 mol)(17.04 g /1 mol) • 15 kg N2 (1/1)(1/28.02)(2/1)(17.04/1) What is the concentration of an NaOH solution when 25 mL of water is added to 2 g of NaOH? • (Na = 22.99 g/mol); (O = 16.00 g/mol); (H = 1
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Part 2: Effects of Environment on Mitosis. Experimental Hypothesis: If we put onion root tips in IAA solution then the rate of Mitosis will increase. Null Hypothesis: There will be no difference Part 1- Post Lab Question If a cell contains a set of duplicated chromosomes‚ does it contain any more genetic information than the cell before the chromosomes were duplicated? No‚ because if it is duplicated‚ it would have the same number of chromosomes unless there was a
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becomes Li+. Lithium is mixed with aluminum and magnesium for light-weight alloys and is used in batteries‚ some greases‚ some glasses‚ and in medicine. Lithium is not made in laboratory since it’s so readily available commercially. 4. Beryllium Name: Beryllium Atomic #: 4
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MoonChem Case The vice-president of Moon Chem‚ a manufacturer of speciality chemicals would like to conduct a study on the policy of providing consignment inventory to its customers in the Midwest region. The aim of this study is to analyze different options for distribution available in the Peoria region and to conclude with the optimal distribution policy. Successful results following this study would allow the company to introduce the consignment inventory strategy nationwide. A careful study
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The lab was to include a purpose‚ procedure‚ data/observations‚ all reactions and side reactions written out with qualitative data beneath each product and reactant except H20‚ and a summary. The purpose of this experiment is to observe the qualitative aspects of a series of reactions involving copper. Procedure 1.Measure about 1g of solid copper. 2.Place Cu in Erlenmeyer flask and place flask under fume hood. 3.Add dropwise 15M HNO3 until solid copper is completely reacted. 4.Place flask
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