of magnesium · Change the amount of acid · Change the amount of water Method: · Set up apparatus as shown · Add 30ml of hydrochloric acid into the beaker · Measure 5cm of magnesium · Add the 5cm of magnesium to the hydrochloric acid · Put a bong onto the conical flask · Start timing · Measure the amount of gas collected every 10 seconds for 2 minutes Diagram: Prediction: I predict that as the concentration of the Hydrochloric acid increases‚ the time taken for the magnesium to
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Introduction Global warming is the term used to describe a gradual increase in the average temperature of the Earth ’s atmosphere and its oceans‚ a change that is believed to be permanently changing the Earth’s climate. Some people do not believe that these are caused by human activities. They think it is all political and falsehood intended to cause panic among humans‚ some call it a hoax. (Dauncy & Patrick‚ 2001). But climate scientists looking at the data and facts agree the planet is
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oxidation-reduction reaction of magnesium and hydrochloric acid solution. We compared the experimental measured amount of a product and the amount predicted by the theoretical calculation of a balanced equation: Mg (s) + 2HCl (aq) → MgCl2 (aq) + H2 (g) PROCEDURE First we obtained a strip of pre-cut magnesium ribbon‚ cleaned it with steel wool to remove any signs of oxidation from the strip (which would alter our results)‚ and then weighed it (individual masses of the magnesium strips for each trial can
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CATHODIC PROTECTION P E FRANCIS CONTENTS 1 2 3 INTRODUCTION............................................................................................................2 PRINCIPLES OF CATHODIC PROTECTION..........................................................3 METHODS OF APPLYING CATHODIC PROTECTION........................................5 3.1 3.2 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 IMPRESSED CURRENT..........................................................................................5 SACRIFICIAL
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Chemistry NYA/701 practise questions test 1 autumn 2012 Audrey Goldner-Sauvé #1 Assuming a magnesium atom is spherical‚ calculate its volume in nm3. The diameter of a magnesium atom is 3.20 Å . The volume of a sphere is V = (4/3) r3. 1 Å = 1 x 10–10 m and 1 nm = 1 x 10–9 m and = 3.14 #2 What is the maximum amount of carbon dioxide that can be produced by the combustion of 0.450g of C2H5OH? #3 What mass of FeCl3 would contain the same total number of ions as 16.8 g
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September 7‚ 2007‚ officers observed Fred Wade talking on his cell phone in a Boston‚ Massachusetts parking lot. Shortly after Wade got into a car being driven by Brima Wurie. Wurie then pulled out of the parking lot‚ went 150 yards down the road‚ made a U-Turn and continued to pull back into the parking lot they had just left from. Police believing they just witnessed a drug bust confronted Wade and found cocaine. Other officers arrested Wurie. When Wurie arrived at the police station‚ his cell phone
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Composition of Magnesium Oxide Aleshia Otieno Mr. Taylor SCH3U-01 Lab #4 Monday‚ November 17‚ 2014 Introduction Percentage composition is the percentage of a formula mass represented by each element. Percentage composition compares the mass of one part of a substance to the mass of the whole. The law of definite proportions states that a specific compound always contains the same amount of elements in fixed proportions by mass. By finding the percent composition of magnesium oxide one will
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The Enthalpy of Formation of Magnesium Carbonate By: Jessica Miller T.A: Thomas Lab Partner: Rebekah Melanson Thursday Lab Room 106 Chemistry 1001-A Due Date: Thursday February 3rd 2011 Abstract The purpose of this experiment was to determine the enthalpy of formation of magnesium carbonate in a lab setting. This was done using a calorimeter‚ which was calibrated by adding a known amount of both hot and cold water. Following the calibration of the calorimeter‚ HCl was placed into the empty calorimeter
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Assignment Module: C Programming Language Learning Units: a) Introduction to C language b) Operators and basic types c) Control flow 1. Write a Program to input three positive integers representing the sides of a triangle and determine whether they form a valid triangle or not. 2. To round off a floating point number to the nearest integer‚ one adds 0.5 to the number and truncates it to an integer. Using this knowledge‚ try to figure out how to round a floating point number to the nearest tenth‚
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Nintendo’s Position in the Next Console Generation Nintendo: Over the years Nintendo Co‚ Ltd. is a large‚ multinational firm that is headquartered out of Kyoto in Japan. The company began over 120 years ago in 1889‚ but didn’t look or operate like they do now. In the beginning‚ Nintendo developed a popular Japanese card game‚ called Hanafuda. The demand for the game quickly increased‚ helping the company grow. The strategy of making playing cards continue all the way until the mid 1900s at
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