Empirical Formula of Magnesium Oxide Date: Aim: The aim of this experiment was to determine the empirical formula of magnesium oxide. Equipment: · Balance · Crucible and lid · Bunsen burner · Magnesium ribbon (0.2g) · Steel wool · Crucible tongs · Pipe clay triangle · Tripod Procedure: 1. Obtain a clean‚ dry crucible and lid‚ then heat them for approximately 5 minutes over a Bunsen burner 2. Clean the surface of a 20 cm strip of magnesium ribbon using steel wool 3. Coil
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1. Discuss the underlying reasons for the rapid growth of crime laboratories in the United States since the late 1960s. pg. 11 The reasons why the growths of crime laboratories in the United States are: agencies saw their potential application to criminal investigation or were pressed by increasing casework. Coinciding with changing judicial requirements has been the staggering increase in crime rates in the United States over the past forty years which make the police agencies use of labs greater
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Aim To work out how light intensity can affect the rate of photosynthesis. Hypothesis I think that the further away the light source is the smaller the rate of photosynthesis is. This is because there is a further distance for the light to each the plant in order for it to photosynthesise. Although the closer the light source is‚ the more photosynthesis‚ the light source could also kill or damage the Elodea (type of pondweed) because it could become too hot and denature its cells. But because
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Chemical Equations Name _____________________________ Balancing Balancing Equations Challenge Part A: Parts & Pieces (1) Circle each subscript in each chemical formula. (2) Draw a square around each coefficient. (3) Answer the questions related to each chemical formula. O2 CO2 5 H2 What element does the O represent? ___________________ How many atoms of each element are in the formula shown? C = ______ O = ______ How many atoms of Hydrogen are in this formula as shown
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Although I love science‚ I encountered more problems in this subject than any other. Recently‚ I was assigned a lab. The purpose was to let Copper Sulfate react with Aluminum and obtain Copper. Before the experiment‚ I set up the stoichiometric equation carefully‚ predicting the production of Copper using my assigned mass of Copper Sulfate. Additionally‚ I intentionally made Copper Sulfate an excess in my equation‚ since it would be dissolved in water and I would only have to collect Copper at the
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PURE FERTILIZERS As the youngest of five children in a family dependent on agriculture‚ Irfan Ahmed achieved far more than he could have dreamt of. Irfan Ahmed believes that we should be ready to do what it takes to serve the customers the way they want. After completing his graduation from Karachi University he started doing job in a pharmaceutical company for Rs. 35‚000 a month in HR department. Irfan found himself incapable of handling manpower issues and quit the post. He soon found another
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Part 1 Questions 1) What sort of environment (hypotonic‚ hypertonic‚ isotonic) did the extra fertilizer create around the roots of the corn? The extra fertilizer created hypertonic environment. 2) Keeping in mind your answer to the previous question‚ what do you believe caused the corn plants to wilt and eventually die? - I believe that the extra fertilizer having a higher concentration than the first round of fertilizer was not a good environment for the corn to try and survive in. 3)
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Module Eight: Text Questions Review Questions 1. How are fire scenes different than regular crime scenes for investigators? One reason fire scenes are different from regular crime scenes is that criminal won’t be present when the scene is discovered. Another reason is that fires and explosives cause serve damage to the crime scene‚ destroying evidence. With arson cases‚ they are a lot more limited than regular crime scenes. Test that can be performed are limited than with regular crime scenes.
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Ammonium sulfate foreign producers 1. Highlights One of the largest producers of specialty chemicals‚ fertilizers‚ plastics and packaging in Latin America. Major producer of styrene and polystyrene. Latin America’s sole producer of acrylonitrile (AN)‚ methyl methacrylate (MMA)‚ acrylic and polycarbonate resins‚ polycarbonate films and cyanides. Largest producer of cast acrylic sheets in the Americas. Latin American’s largest ammonium sulfate producer http://www.unigel.com.br/
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Date and Observations: I’ll send you the picture by text message: (561-542-5608) Calculations: 1. Write the balanced equation for the reaction conducted in this lab‚ including appropriate phase symbols. Mg(s) + 2HCl(aq) --> H2(g) + MgCl2(aq) 2. Determine the partial pressure of the hydrogen gas collected in the gas collection tube. The partial pressure of the hydrogen gas is 1.07 atm 3. Calculate the moles of hydrogen gas collected. pv=mrt ; n= .0013mol of hydrogen gas 4. If magnesium was
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