Experiment # 4a Title: Determination of the Hardness of Water from a Waterfall Aim: To determine the molarity of EDTA and to determine the hardness of water by measuring the concentrations of calcium and magnesium in a water sample by titration. Abstract: The aim of this experiment was to determine the molarity of a sample of EDTA and then to use this sample to determine the hardness of a sample of water. This was done using a titrimetric method. This was standardized using calcium chloride.
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Effect of Various Metal Activity (Zinc (Zn)‚ Magnesium (Mg)‚ and Copper (Cu)) in the Color of Rainwater and Amount of Rust in the Iron Nail “ Hypothesis If the type of metal that has the highest activity will be used ‚ then there will be the least amount of rust found in the nail and the color of the rainwater would be the lightest. Independent Variable • Types of metals used in wrapping Title: “ The Effect of Various Metal Activity (Zinc (Zn)‚ Magnesium (Mg)‚ and Copper (Cu)) in the Color of Rainwater
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burns in nitrogen. It is marvellous in fireworks. Phosphorous is an essential component of living systems and is found in nervous tissue‚ bones and cell protoplasm. Magnesium is an important element for plant and animal life. Chlorophylls are porphyrins based upon magnesium. The adult human daily requirement of magnesium is about 0.3 g
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Lab Report for Chemical Changes and Conservation of Mass Lab Previous to the reaction‚ the magnesium appeared to be a solid‚ white‚ black‚ and grey substance with many small dark particles within the substance. The hydrochloric acid was a clear liquid that looked like water It weighed 42.2 grams in total. During the reaction‚ the two substances produced bubbles‚ creating smoke and became warm with a smell that is irritating to the human nose. After the reaction‚ it appeared to be a clear‚ bubbly
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is when water passes through or over deposit such as limestone; the level of Ca²⁻and Mg²⁺and HCO₃ ions present in the water can greatly increase and cause the water to be classified as hard water. This term results from the fact that cation and magnesium ions in water combine with soap molecules‚ making it hard to get suds. High level of water ion such as Ca²⁻ and Mg²⁺ can cause scaly deposits in plumbing appliances & boilers. These two ions also combine chemically with soap molecules resulting
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NAME: ANSWER KEY PERIOD: __________ CHAPTER 6 PERIODIC TABLE HOMEWORK/PRACTICE PACKET HW#1 PERIODIC TABLE VOCABULARY Match the correct vocabulary term to each numbered statement. Write the letter of the correct term on the line. Column A a 1. The highest occupied s and p sublevels are partially filled. n 2. The highest occupied s sublevel and a nearby d sublevel contain electrons. m 3. metals having only 2 electrons in the highest occupied energy
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Chickpea (Cicer arietinum L.) is an important legume crop and its seeds are rich source of protein and fibre. It also contains micronutrients such as iron‚ calcium‚ potassium‚ phosphorous‚ and magnesium making it an integral part of daily diet of millions of people especially in the developing world. Globally‚ it is grown on an area of 11.5 million hectares with total annual production of about 10.5 million tonnes. Commercial production of chickpea is not too old in Canada. It started in 1990s and
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Journal Analysis Title of the Research Author/s Journal Year of Publication Dissimilar material laser welding between magnnesium alloy AZ31B and aluminum alloy A5052-0 R. Borrisutthekul et al. Science and Technology of Advanced Materials 6 2005 Dissimilar Welding of Al and Mg alloys by FSW T. Morishige et al. MATERIALS TRANSACTIONS Vol. 49 2008 In Partial Fulfilment Of the Requirements for the Subject Industrial Materials and Process Submitted by: Submitted to:
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neutralize the antacid. The active ingredient in Life Brand Milk of Magnesia is magnesium hydroxide (“Nonprescription Medicines and Products - Antacids and Acid Reducers”). Magnesium hydroxide is a strong base with a pH value of 12 (“Strong and Weak Acids and Bases and Their Salts”). A chemical equation to show the reaction between the active ingredient and hydrochloric acids would be: Magnesium Hydroxide + Hydrochloric Acid→ Magnesium Chloride + Water. As an equation it would be:
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Part I: Introduction Stoichiometry is the study of the quantitative‚ or measurable‚ relationships that exist in chemical formulas and also chemical reactions. In this experiment hydrogen gas will be produced from the reaction of a known mass of magnesium metal with an excess of hydrochloric acid. The theoretical number of moles of hydrogen gas may be calculated using stoichiometry and the balanced chemical equation. The theoretical volume of hydrogen gas may then be determined from the previously
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