The difference between speed and velocity is that Velocity also includes a direction the acceleration of gravity on earth is approximately 10m/s2 if you drops rock from a tall building‚ about how fast will it be falling after 3 seconds? 30m/s Momentum is defined as Mass time’s velocity suppose you live on the moon. Which of the following would be true? Your weight would be less than your weight on Earth‚ but your mass would be the same as it is on Earth. In which of the following
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fdsgdsfgdsfgsdgdsgsdfEssay 1.(a) State experimental evidences for i) strong repulsive force ii) strong attractive force between atoms in a solid. (b) A simple model for the oxygen molecule consists of two equal masses connected by a light spring . The atoms oscillate along their lines of centre while the midpoint of the spring remains fixed. i) Write down an expression for the frequency of oscillation of one oxygen atom in terms of its mass m and the force constant K of
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1. Introduction Voice morphing means the transition of one speech signal into another. Like image morphing‚ speech morphing aims to preserve the shared characteristics of the starting and final signals‚ while generating a smooth transition between them. Speech morphing is analogous to image morphing. In image morphing the in-between images all show one face smoothly changing its shape and texture until it turns into the target face. It is this feature that a speech morph should
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DEFINITIONS OF OXIDATION AND REDUCTION (REDOX) This page looks at the various definitions of oxidation and reduction (redox) in terms of the transfer of oxygen‚ hydrogen and electrons. It also explains the terms oxidising agent and reducing agent. Oxidation and reduction in terms of oxygen transfer Definitions • Oxidation is gain of oxygen. • Reduction is loss of oxygen. For example‚ in the extraction of iron from its ore: [pic] Because both reduction and oxidation are going on side-by-side
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It is produced either as powdered or precipitated calcium carbonate. Calcium carbonate decomposes to calcium oxide and CO2 on heating. Treatment with dilute mineral acids produces corresponding calcium salts with liberation of CO2: CaCO3 + 2HNO3 Ca(NO3)2 + H2O + CO2(g) In this experiment‚ the mineral acid is added in excess to the calcium carbonate and the excess titrated against standard sodium hydroxide. This kind of titration is termed back titration. In this procedure
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OXIDATION AND REDUCTION Oxygen makes up only about 20% of the air‚ yet is the essential component for so many reactions. Without it fuels would not burn‚ iron would not rust and we would be unable to obtain energy from our food molecules through respiration. Indeed animal life on the planet did not evolve until a certain concentration of oxygen had built up in the atmosphere over 600 million years ago. The term oxidation has been in use for a long time to describe these and other reactions where
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STK 1084 Inorganic Chemistry I‚ LU 3 Oxidation – Reduction Reactions‚ Prepared By: Dr. Tay Meng Guan‚ Faculty of Resource Science and Technology‚ Universiti Malaysia Sarawak. LU 3 Oxidation and Reduction Reactions 3.1 Ideas of Oxidation and Reduction Oxidation of an atom can be occurred in the following conditions: 1. Losing an electron from the orbitals. e.g.: A A+ + e- 2. Adding an electronegative element (e.g.: F‚ Cl‚ Br‚ O) to a molecule. e.g.: A + F AF 3. Losing hydrogen
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Lab 5 Oxidation of an alcohol CHM2123 Introduction: Oxidation is a key reaction in organic chemistry. Oxidation of an alcohol can produce aldehydes‚ ketones‚ or carboxylic acids. One of the methods of oxidation is an aldol reaction through carbon-carbon bonds. The oxidation oxidizes primary alcohols to aldehydes and secondary alcohols oxidizes ketones. Tertiary alcohols are converted to the common oxidizing agents. Scheme 5.1: Aldehydes can be oxidized easily to carboxylic acids in aqueous medias
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Name ______________________________________ Before you begin‚ save this Lab Report Template on your computer as LastNameAPChem7 Title: Acid Base Titration Purpose: To practice titration techniques To perform acid-base titrations To determine the molarity and percent composition of acetic acid in commercial vinegar Materials: |0.1 M sodium hydroxide |24-well reaction plate |toothpicks | |phenolphthalein test paper
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DKFLSDFKLFKJ | Acid-Base Titration. | kfjhdkjhvdkfj | | April Jowers | 12/19/2012 | DKFJSDKJFHDSKJHF | Introduction In this lab we will use basic titrating skills and techniques in order to titrate HCl. We will also be practicing how to prepare the solution. Using the titration data‚ we can practice our stoichiometric skills and also become more familiar with using lab equipment. Titration is the process of measuring the exact volume of a solution of known concentration that is
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