Chapter 1 Chemical Reactions and Equations Q.1. Why should magnesium ribbon be cleaned before burning in air ? Ans: Magnesium ribbon is a very reactive metal. When stored it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide being a stable compound prevents further reaction of magnesium with oxygen. The magnesium is cleaned before burning in air to remove this layer so that the metal can be exposed to air properly. Q.2. Write the balanced
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Kelly Freas Date of Experiment: October 28‚ 2012 Period 2 Honors Chem Purpose: The purpose of this lab is to observe the reactions of halide ions with different reagents by mixing them together. Analyze data to determine characteristic reactions of each halide ion. Infer the identity of unknown solutions. Materials: * 0.1 M AgNo3 * 0.1 M NaCl * 0.1 M NaF * 0.2 M KBr * 0.2M Kl * 0.2 M Na2S2)3 * 0.5 M Ca(NO3)2 * 3% Starch solution * 5% NaOCl ( commercial bleach)
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Bhubaneswar in the past few years has come out of its dormancy and has shown considerable development in sectors that have placed it as one of the fastest growing cities in the nation. With the IT majors and MNCs opening up‚ the very face of the working class has now changed. Once the ‘hamara Bajaj’ family (with dad driving mom and two kids out in the unfailing trustworthy two wheeler) is now slowly transforming to mom’s shopping in malls ‚groceries from retail shops and super busy dad’s driving
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to your desired amount of peanut butter and jelly/jam‚ place both pieces facing each other together so that the peanutbutter and jelly/jam are touching. Now time to grab your plate and place the sandwich on there. You will need to get your napkin too PB&J can get a little messy. Peanutbutter and jelly is also very enjoyable with a side of chips. There you have it‚ now its time to enjoy this delicious sanwich that you have taken the time to prepare. Next
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during the MACAPAGAL-ARROYO administration (January 2001 - June 2010). Despite this growth‚ however‚ poverty worsened during her presidency. The AQUINO administration is working to reduce the government deficit from 3.9% of GDP‚ when it took office‚ to 2% of GDP by 2013. The government has had little difficulty issuing debt‚ both locally and internationally‚ to finance the deficits. The AQUINO Administration reduced public debt to below 50% of GDP and obtained several ratings upgrades on sovereign debt
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Hamlet: Act 2 Scene 2 - Compare Hamlet’s Reaction to Arrival of Rosencrantz and Guildenstern and To the Players Yin Choi Compare Hamlet’s reaction to the arrival of Rosencrantz and Guildenstern with his reaction to the arrival of the Playyers. Account for his reactions. By comparing Hamlet’s reaction to the arrival of Rosencrantz and Guildenstern with his reaction to the arrival of the Players‚ we can observe the different perspectives of Hamlet’s character. His reaction to the arrival of
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The Iodine Clock Investigation Introduction This is an investigation into the rate of a reaction and the factors that contribute to how fast a reaction will take place. Through the recording and analysis of raw data‚ this investigation also allows us to apply generally accepted scientific rules and to test them against results gained from accurate experimental procedures. Aim The aim of this experiment is to investigate the rate at which iodine is formed when the concentration
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Lab #5: Refraction of Light Theory: Refraction can be defined as the bending of a wave when it enters a medium which causes it to have some reduced speed. In terms of light‚ refraction occurs when the ray passes through some medium which slows its speed; such as water or glass. In this instance the ray tends to bend towards the normal of the medium. The amount of bending or refraction which occurs can be calculated using Snell’s Law (). Objective: To measure the index of refraction of Lucite
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Question 1: In order for Ted and Mike to acquire the amount of $10‚000‚ they need to know where to obtain the money. Some ways that Ted and Mike can gather money is by taking out loans from the bank‚ putting a mortgage on their houses‚ start a part time job‚ take out small business loans‚ grants‚ funding‚ and look for investors to support their idea. There are many variations in which Ted and Mike can get money to start their business those are just a few. Ted and Mike will face a lot of complications
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Aquino our 14th President prioritized the upgrading of the educational system in our country. To give the Filipino people a good quality of education and for the Filipinos to be more globally competitive. One of his agenda is the K-12 PROGRAM wherein 2 more years are added in secondary level which is called “Senior Highschool” ‚ one of the objective of this program is to prepare the student in entering the tertiary level and so that their skills be developed as they are preparing themselves to enter
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