Chemistry 11 Final Examination Review - Answers Part A - True or False. Indicate whether each of the following statements is true or false. Correct the false statements. F 1. The mass of an electron is equal to the mass of a proton. The mass of an electron is less than the mass of a proton. T 2. The mass of a proton is approximately equal to the mass of a neutron. T 3. The atomic number represents the number of protons in a nucleus. T 4. The proton has a mass of approximately
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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 in water bath. 5.Add 4M NaOH slowly until no more solid forms. 6.Mix contents by slowly swirling flask. 7.Place flask back in water
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Determining the Unknown Concentration of NaHCO3 (aq) Through Titration Introduction Titration is the accurate addition of a titrant- solution in a burette- into a measured volume of a sample (Kessel‚ 2003). There are many different types of titration‚ such as acid-base reaction‚ redox reactions‚ precipitation reaction and more (Dohrman). In this lab an acid base titration will be explored. In an acid-base titration‚ the concentration of an acid or base is unknown and is determined by the adding
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TA Grading Rubric for THER 357 – Spec. Determ. of Cu in Brass Student Version A score sheet will be used to grade each formal lab report. Use the questions for each section as a guideline when evaluating a student’s work for the various sections of the lab report. Title: Must include: Student’s name‚ Partner’s Name‚ TA’s Name‚ Date‚ Name of Experiment‚ Course and Section Number. Purpose: Did the student copy the purpose from the experiment (poor) or write something in his/her own words (satisfactory)
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and everyone has a fair chance. And because that is all that the white people feed the white people that is all they know. But when they are confronted with it‚ it is hard for them to change because they believe that what they know is real. Page 2-3: Tim Wise’s main theme/subject is the fact that white people are literally as his title claims born to belonging in the United States. He is explaining about his life and how he was born to be accepted into the society that we live in even when he
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cycle of copper through many chemical reactions. What we are going to do is take a piece of copper metal put it through a series of reactions that change it¡¦s state of matter and chemical formula‚ but in the end‚ we will return it to it¡¦s normal solid state. Determine the percentage yield (quantitative). Define what happen at level of electron for oxidation/reduction‚ double replacement‚ neutralization and decomposition. There are five reactions that the copper will go through. 1. Cu(s) + 4HNO3(aq)
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international visitors’ needs‚ providing appropriate service‚ and handling complaints and feedback. Understanding the local and international visitors’ needs involves catering for people from different cultures‚ backgrounds and upbringing’s. For example‚ they might be from Japan where they are formal and punctual‚ or they might be from a Muslim upbringing where they fast between sunrise and sunset for the month of Ramadan. Through effective observing‚ listening and questioning‚ staff are
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------------------------------------------------- ABSTRACT ------------------------------------------------- The copper reaction experiment was demonstrated by adding the reagents like 16M HNO3‚ Distilled water‚ 6M NaOH‚ 6M H2SO4‚ Acetone‚ Zinc metal and Methanol into the beaker with the copper wire. The experiment was also demonstrated to observe how copper reacts while different reagents were being added. It was also demonstrated to practice the common laboratory techniques such as methods
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CU 2941 1.2. Give examples of the different types of partnerships you work with and explain how you support effective communication with each one. Working partnerships include: • Students • Parents and carers • Educational staff - teachers‚ support staff and workshop lecturers • Additional staff – personal care‚ cleaners‚ building maintenance‚ bank‚ volunteers‚ agency‚ students on placement (nursing‚ H&SC) • Local borough supporting agencies – Social services‚ SALT‚ physiotherapists‚ psychologists
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LET’S START WITH COPPER CHEMISTRY REPORT 2012 INTRODUCTION: The law of conservation of mass means that the atoms of an object cannot be created or destroyed‚ but can be moved around and be changed into different particles. This law says that when a chemical reaction makes two different atoms into a new product‚ the mass will be the same. Knowing this the mass of the copper should be the same at the beginning and at the end of the experiment. In this investigation we will see
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