Purpose The purpose of this lab is to identify the different features that come about by using oxidation reduction and recording the observations‚ these tests will help determine the specific qualities each solution has. Hypothesis I theorize that nothing will happen with Magnesium because it is such a soft metal. Zinc should turn a greener color‚ because that’s what happens to a lot of statues and sculptures. I theorize that iron will tarnish badly because in air it can get tarnished so oxidation
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with two drops of NaOCl. The results were observed and recorded. In column 1 row F; two drops of KI was combined with two drops of Pb(NO3)2. The results were observed and recorded. Then one drop of well shaken starch was added to the NaOCl and Kl and those results were observed and recorded. In column 1 row G; two drops of KI were combined with two drops of Pb(NO3)2. The results were observed and recorded. In column 1 row H; two drops of NaOH was combined with two drops of Phenolphthalein
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Positive Behavior Support Positive Behavior Support (PBS) is not a modification plan for students with difficult behaviors; it is a system for modifying the environment; as well as the way that teachers respond to these difficult behaviors. "Such environmental interventions‚ in turn‚ serve to make problem behavior less effective‚ efficient‚ and relevant and desired behavior more functional" (http://www.ldonline.org ). Teachers first should utilize a functional behavioral assessment in order to
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Copsa Mica‚ alongside Baia Mare and Zlatna are known as the representative areas for nonferrous metallurgy in Romania. As a result of this almost 70 years old industrial activity‚ the Copsa Mica area is strongly polluted with heavy metals like: Cd‚ Pb‚ and Zn. The present paper presents some aspects impact of metals on environment and human health. There are presented concentration data about 13 metals (including heavy metals) in the dump and on the premises of SOMETRA SA measured with X-ray fluorescence
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Beans‚ vegetables‚ fruits‚ lean meat‚ fish and eggs are examples of healthy food (University of Minnesota). All the products from these fast-food restaurants may also cause lack of nutrients and vitamins in the body‚ breakouts‚ and other body problems (PBS). Teenagers are mainly unhealthy because of eating junk food. Junk food causes a lot of tragedy by causing
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et al.‚ 1984). Until the capping at Parc mine was introduced‚ approximately 13‚000 tons of spoil containing 104 tons Zn‚ 43 tons Pb and 1 ton Cd had been lost from the primary tailings dam. Once this reached the river‚ it caused damage to the river ecosystem‚ killing flora and fauna‚ and contaminating agricultural pastures downstream. In 24 hours‚ 15 kg Zn‚ 0.27 kg Pb and 0.1 kg Cd was leaking into the River Conwy with 250‚000 tons of tailings slowly entering the ecosystem (Gao and Bradshaw‚ 1995
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abroad use up foreign currency. If we start to spend more foreign currency than we earn‚ one of the two things must happen. Both are likely to be a pb: Balance of payment will go into deficit → Shortfall (deficit) of foreign currencies. Gov will have to borrow money from abroad‚ or drawn its foreign currency reserves to make up the shortfall. Pb because: if it goes on too
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Chapter 9 Profit Planning and Activity-Based Budgeting McGraw-Hill/Irwin Copyright © 2011 by The McGraw-Hill Companies‚ Inc. All rights reserved. Learning Objective 1 9-2 Learning objective 1 • List and explain five purposes of budgeting systems. Purposes of Budgeting Systems Budget Budget a detailed plan‚ expressed in quantitative terms‚ that specifies how resources will be acquired and used during a specified period of time. 1. Planning 2. Facilitating Communication and Coordination 3
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catalyst for chemical reactions. Balancing Chemical Equations Balance the equations below: 1) ____ N2 + ____ H2 ____ NH3 2) ____ KClO3 ____ KCl + ____ O2 3) ____ NaCl + ____ F2 ____ NaF + ____ Cl2 4) ____ H2 + ____ O2 ____ H2O 5) ____ Pb(OH)2 + ____ HCl ____ H2O + ____ PbCl2 6) ____ AlBr3 + ____ K2SO4 ____ KBr + ____ Al2(SO4)3 7) ____ CH4 + ____ O2 ____ CO2 + ____ H2O 8) ____ C3H8 + ____ O2 ____ CO2 + ____ H2O 9) ____ C8H18 + ____ O2 ____ CO2 + ____ H2O 10) ____ FeCl3
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Rod Vanderhuge Period 2 Lab Title II. Data Collection and Processing A. Data Collection Amount of Substance (g) Uncertainty ±0.01g | Water Added (mL)Uncertainty ±0.05 cm3 (mL) | 3.30 g Pb(NO3)2 | 50.00 mL | 4.00 g KI | 50.00mL | 11.90 ±.06 g PbI2 (The uncertainty of this value differs from the uncertainty value of the other masses) | N/A | The qualitative data taken was that the compound created was a yellow precipitate‚ and when the water was poured through the funnel in order
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