Lab 2 Sara Rodriguez Period 2 Purpose: What is the more accurate way to measure volume‚ by using displacement or by using a ruler? Hypothesis: If the method of displacement is used ‚ then the results will be more accurate than measuring the volume using a ruler. Materials: -250 mL graduated cylinder -Triple beam balance -A weigh boat -Ruler -Samples Procedure: 1. Gather materials such as ‚ samples‚ weigh boat‚ triple beam balance ‚ graduated cylinder‚ ruler and water. 2. Take the materials
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01 tecHnicAl analytical procedures relevAnt to AccA QuAlificAtion PAPers f8 AnD P7 AnD cAt PAPer 8 ‘The auditor shall design and perform audit procedures that are appropriate in the circumstances for the purpose of obtaining sufficient appropriate audit evidence.’ (ISA/HKSA 500(6)) To obtain audit evidence‚ the auditor performs one – or a combination – of the following procedures: ¤ inspection ¤ observation ¤ external confirmation ¤ inquiry ¤ reperformance ¤ recalculation
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CHM152LL LAB MANUAL COMPLEXOMETRIC DETERMINATION OF WATER HARDNESS Complexometric Determination of Water Hardness Introduction Complex ions When a neutral molecule or anion (a Lewis base) donates electron pairs and attaches itself to a metal ion center (a Lewis acid)‚ the resulting cluster‚ or complex‚ of atoms becomes a single complex ion. When such complexes form‚ the electron donating groups (called ligands) form coordinate covalent bonds through empty orbitals on the metal ion. An example
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their heavy reliance on effective aircraft control systems. A number of air cargo companies‚ including UPS and FedEx‚ have determined a focus on the use of GPS systems to support a number of operational components‚ including tracking of aircraft‚ precision landing and support for problems like terrain evaluation and hijacking issues. In order to understand how GPS has been incorporated into the air cargo system‚ it is necessary to consider the progression of the GPS process in air cargo and air passenger
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fingerprints‚ which can add undesired weight‚ while handling the coins. The Ohaus Analytical Plus Series analytical balances were used for the weight analysis. An analytical balance is a weighing tool with a capacity that ranges from 1 g to a few kg with a precision of at least 1 part in 105 at maximum capacity.(2) The statistical parameters of both sets can be found on Table 1. Table 1 Calculated Values of Several Statistic Parameters Parameter | Data Set 1 |
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Basic Laboratory Techniques Hari D. Mandal‚ PhD. Objectives 1. To use common laboratory apparatus in measuring mass‚ length‚ volume‚ temperature‚ and density 2. To compute the accuracy and the precision of a set of scientific measurements 3. To apply the concept of significant figures in reporting correctly scientific measurements Materials and Equipment Ruler‚ meter stick‚ 10 mL graduated cylinder‚ 50 mL graduated cylinder‚ small and large test tube‚ 50 mL and 150 mL beakers
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analytical balance‚ studying the precision of weighing made with it and evaluating the common error encountered in weighing. Weight of the vial‚ the cap‚ vial with cap and the vial that was induced with the factors affecting the sensitivity of the balance (e.g. moisture) were determined. As seen‚ there were significant differences on the weights though there were some errors observed. Expected results were not seen because of certain influences that somehow affected the precision and accuracy in weighing
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Barnidipine hydrochloride is ([3S]-l-benzyl-3-pyrrolidinyl methyl [4S]-2‚6-dimethyl-4-[m-nitrophenyl]-l‚4-dihydropyridine-3‚5-dicarboxylate hydrochloride) has been synthesized and developed as an antihypertensive drug by Yamanouchi Pharmaceutical Co Ltd. (Tokyo‚ Japan). Physicochemically‚ Barnidipine hydrochloride differs from other dihydropyridines‚ such as nifedipine or nisoldipine‚ in its water solubility. The solubility of Barnidipine at room temperature is 2.89 mg/ml [1]. Literature review reveals
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impact my % accuracy and therefore the quality of my results. Ideally no problems would occur‚ and I would be able to complete the experiment without any errors occurring which would therefore give me a perfect result. I tried to work with total precision and accuracy however my results still had many errors that occurred. The first major error that could have occurred was when making our standard solution‚ this would be used to find out the
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“Persimmons”: Assimilation‚ & Social Negligence “See through.” Surely‚ most people have experienced this feeling before‚ the feelings of being seen‚ but not truly “seen.” As if every part of their being‚ their roots‚ their culture‚ and history meant nothing and holds no value to anyone but themselves‚ just as the speaker is raised in a bi-lingual‚ bi-culture atmosphere although most of us may be forgotten throughout our lifetime from daily encounters or short terms relationships; semester
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