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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which were consistent with the thinking of the Enlightenment‚ overall‚ the French Revolution failed to carry out these ideas righteously and actually manifested ideas and actions which were in stark opposition of the beliefs of the Enlightenment. Because a successful revolution is determined to be a success if the initial‚ primary goals of the revolution are achieved‚ and because the French Revolution failed to attain many of its fundamental objectives‚ the French Revolution was only partially a successful
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to determine the mass of sulfate in the precipitate from the reaction of BaCl2 (aq) + SO42-(aq) → BaSO4(s) + 2Cl-(aq) while utilizing gravimetric analysis methods. Introduction Gravimetric Analysis utilizes the mass of a product to calculate the quantity of the original unknown analyte‚ Quantitative Chemical Analysis page 674. While this method of chemical analysis has been established since the eighteenth century‚ it is still one of the most accurate methods when determining how much unknown
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Chapter 12 Study Guide: The nervous system develops from which embryonic tissue? Describe the development of the neural tube. What are the 3 primary brain vesicles? What are the secondary brain vesicles? What adult brain structure does each secondary vesicle become? What are ventricles and what is their function? What percentage of the adult brain is made up by the cerebral hemispheres? Describe the following terms: • Gyri • Sulci • Fissures • Longitudinal
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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 of Al2(SO4)3?
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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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These very educated men organized their lives and morals in the search for the meanings of things and what they stand for. Every Greek mind had a different answer to the same questions being “what is the primary substance of things?” which branched out in two more questions being ‘what is the origin of things?” and “What is the nature of things?”. These are the mysteries of life that people deflect and not give a second thought; however‚ some people do ponder
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What drives Romeo and his actions? Emotions can take over both your mind and your heart. For some‚ they tend to let their feelings get the best of them‚ therefore causing someone to do things because of how they feel. There are many examples for this in Romeo and Juliet but one stands out more than others‚ the character of Romeo. “Romeo‚ Romeo! Wherefore art thou Romeo?”(Act 2‚ scene 2‚ 33)‚ Juliet asks this question‚ and it might get one thinking what kind of man is Romeo and what drives him and
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Copper Sulfate Pentahydrate Purpose: To verify the formula for copper (II) sulfate pentahydrate by measuring the amount of water decomposed from the hydrated species. MSDS: Copper sulfate pentahydrate- Harmful if swallowed. Causes skin irritation‚ causes serious eye irritation. Very toxic to aquatic life with long effects. If copper sulfate stays in the stomach‚ the victim becomes unconscious. The symptoms of poisoning include diarrhea‚ headache and injury to vital organs. Background: 1
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1. Chp 1 Explain and give a couple examples of the methods the author uses to learn and gather data. Be specific. What are the strengths of these methods and what are some of the weaknesses of these methods? (consider if representative‚ bias‚ reliability‚ generalizability‚ sample size‚ what you can know‚ and detail‚ accuracy.) Explain why they are strengths or weaknesses. The author of Gang Leader for a Day uses many resources to learn and gather data. First‚ He is told to go through surveys
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