Pre-Laboratory Assignment 1. What are the hazards associated with sodium hydroxide (NaOH) solution? Sodium hydroxide solutions‚ especially in high concentrations‚ are toxic and corrosive. 2. (a) What buret reading should you record when the liquid level is as shown in Figure 2? In Figure 2‚ the lower meniscus lies below the 3 mL line and 4 minor gradations that signify 0.1 values. Estimating the uncertain digit to be 0.04 mL‚ the reading we record for this particular buret is 3.44 mL.
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Purposes of Experiment: To synthesize a transition metal complex‚ potassium tris (oxalate)ferrate(III) trihydrate in a two step process‚ to learn new laboratory techniques such as decantation‚ recrystallization‚ gravity and suction filtration. Also the purpose of the experiment is to determine the actual‚ theoretical‚ and percent yields of product‚ and characterize the final compound by determining the number of waters of hydration by gravimetric analysis List of Observations: After adding
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Isotopes and Atomic Mass It’s Vegium I. Purpose The purpose of this lab is to determine the average weights of each isotope of the “element” vegium‚ determine the relative abundance of isotopes of vegium‚ and calculate from experimental data the atomic mass of vegium. II. Apparatus Sample of vegium‚ balance‚ weighing cups III. Data Tables | |Beanium |Peaium |Cornium |Total
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HIST 151 Spring 2013 Exam 2013 Plymouth- originally headed toward Virginia but strayed off course of and made it to Cape Cod belonged to radical sect of Puritans called the separatist. Started to make their own congregation in England. King James hanged the separatist leaders and many fled to Holland and eventually to America. Taught how to grow corn and catch fish by the Indians. No charter from the English. Own form of government in 1620 not first English colony. Indentured servants- came
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Isolation of the Major Constituents of Clove Oil Organic Chemistry Laboratory II‚ 10 February 2011 Corey Cates Introduction and Objectives The purpose of this lab was to obtain a pure sample of clove oil from ground cloves using steam distillation‚ perform infrared spectroscopy on the sample‚ and analyze the IR to identify the major constituent in the clove oil. The first day the clove oil was removed from the ground cloves into an aqueous solution then removed from the water using DCM. The sample
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05.03 Gas Laws: Lab Report Directions: Read/ Study all the lesson information in the 5.03 lesson then click the activity tab to perform two virtual labs. (There are recorded Teaching Videos for lesson 5.03. To view them click the “Help Sign” on the announcement page. Next scroll down to Lesson 5.03 stuff and you should see 5 part video links that will cover the lesson content.) Virtual Lab 1- Part I: Boyle’s Law A sample of gas is trapped in a sealed container‚ which has a movable lid. Moving
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perspective of a measurement could be different than the others‚ but the lab cannot be preformed solo. When it comes to improving the lab‚ there aren’t to many ways to ensure accurate measurements due to the fact that in any experiment there are human and environment variables that cannot be accounted for‚ or even prepared for. In any experiment there will always be human error. Group Lab Report The purpose of this lab is to use a variety of analytical skills and methods to determine the empirical
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Epoxidation Reactions Lab Report 2 Abstract An oxygen atom is transferred from a peroxy acid to the carbon=carbon double bond thus forming an epoxide. Scheme 1. Oxone Epoxidation. Scheme 2. mCPBA Epoxidation. The percent yield for the Oxone epoxidation reaction was 65% yield and the mCPBA epoxidation reaction was 70% yield. Oxone is the greener alternative because using mCPBA is twice as expensive as Oxone and leaves behind the epoxide plus m-chlorobenzoic acid while Oxone creates non-toxic
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Are a people ever justified in openly violating laws (like the Fugitive Slave Act) that they disapprove of and think immoral? What has been the fate of such laws in U.S. history? Should the majority always Rule I believe that if the law is so immoral that it causes harm you have an obligation to disobey. According to the law‚ it was the responsibility of the federal government to help owners recapture these runaway slaves‚ who were denied any legal means to try and fight their return to slavery.
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The Lab Report‚ Significant Figures & Working with Numbers CHMY 142-18 Experiment 1 September 4th‚ 2009 Introduction: This experiment is dealing with the relative accuracy of an individual measurement. Data will be provided to perform the calculations asked for. The purpose of this experiment is to know how to use significant figures and to get formularized with making proper laboratory reports. Procedure: Use the data table’s information to solve the missing
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