without metal. The metals we use in our houses are mostly for keeping them sturdy. Though there is one problem we have when it comes to metals. That problem is that they rust. Metals rust when they are in contact with oxygen‚ and water. They rust much faster when they are in contact with salt water‚ and acid rain. We chose to see what would happen to various metals when they contacted with salt water. When the electrons move around in the salt water‚ it causes the metals to rust. The metals we chose
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I. BACKGROUND Precious metals and gemstones have been a popular investment vehicle especially in Asian countries and on the part of those who are constantly moving from one country to another. Asians have a special fondness for them because precious metals and gemstones have enabled them to survive hard times most especially when the super power waged their wars on our shores. Another reason for this is the presence of many gold deposits and mines in our country
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Modern life is very different from life 50 years ago. Some people think the changes in our lives have been very positive while others think they have been more negative. What do you think? Fifty years ago life was simpler and some people think things were better back then. While it is true that life today has some negative aspects‚ I think the modern lifestyle is better than the way people lived in the past. Some people like my grandparents say there were a number of positive things about life
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1. How does Look-Look use technology to gain insights on the teen and young adult markets? Lee and Gordon felt the that younger people themselves were not given a very large part in the to play in the market research process‚ even though they were in the best situation to give complete accurate information about youth trends. So they created an internet communication system and enlisted young people to provide up to date information‚ right from them source. 35‚000 handpicked youths‚ from all over
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Copper was the first metal that is used by humans as weapons and tools. It is shinny and has a reddish brown color. It’s application toward humans has really changed the way we live. Copper is an excellent conductor of electricity‚ which is often used as electrical wires or cables in generators‚ motors and electric products. In addition‚ it is also an outstanding conductor of heat‚ which is used in radiators and heating systems. Since it does not react with water and corrode easily‚ it is widely
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Research question/Aim Extract copper from copper oxide by reduction using butane gas Hypothesis The butane gas will reduce the copper oxide and leave behind pure copper. This will allow us to find the empirical formula of the copper oxide as well as the masses of oxygen and copper Variables Dependant variable The dependant variable will be the reduction of the copper oxide which will be calculated at different temperatures. Independent variable The independent variable here
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Copper-Iron Stoichiometry Lab Report 10/3/12 Abstract: The lab performed required the use of quantitative and analytical analysis along with limiting reagent analysis. The reaction of Copper (II) Sulfate‚ CuSO4‚ mass of 7.0015g with 2.0095g Fe or iron powder produced a solid precipitate of copper while the solution remained the blue color. Through this the appropriate reaction had to be determined out of the two possibilities. Through the use of a vacuum filtration system the mass of Cu was
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Q 40 2P 0.2Y Pb where Y refers to income and Pb refers to the price of barley. Assuming that wheat and barley both sell for RM2‚ and income is RM10‚ calculate the price elasticity‚ cross price elasticity and income elasticity for wheat. 4. State whether each of the following is TRUE or FALSE‚ giving an appropriate explanation for your answer in each case: (a) The cross elasticity of demand for all normal good is positive. (b) When demand is price inelastic‚ lower prices mean both
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Empirical Formula: Preparation of a Copper Sulphide. Aim The aim of the experiment was to determine the empirical formula of sulphide of copper and to make sure that an amount of copper metal reacted with elemental sulphur‚ Eq. 1. To be able to calculate the empirical formula of copper sulphide‚ the mass (grams) of copper has to be known and the mass (grams) of copper sulphide after the reaction. Copper‚ chemical formula Cu‚ is a known metal with a red-brown colour. The solid element
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approximately equal to the mass of a neutron. T 3. The atomic number represents the number of protons in a nucleus. T 4. The proton has a mass of approximately 1 u. F 5. The difference in mass of isotopes of the same element is due to the different number of protons in the nucleus. The difference in mass of isotopes of the same element is due to the different number of neutrons in the nucleus. T 6. The isotope carbon-12 is used as the relative mass standard for the atomic mass
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