Are electronic devices taking over our kids’ lives A report and survey by the Henry J. Kaiser Foundation shows that students are spending more than 7 ½ hours un various media devices. Researchers show that the number of hours is as much as 53 hours weekly and more so in some cases. The survey shows that student’s grades can be affected by excessive use of the internet and electronic media devices. Parental involvement and rule setting could decrease a child’s usage and attachment to the internet
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Nuclear Chemistry Imagine the majority of Earth being quarantined off and people having to live in specified areas to avoid harmful radiation that originated from nuclear energy/waste. The integration of nuclear energy/medicine is largely controversial among people. Every side to the argument has its benefits as well as its negative consequences. Nuclear energy should not be used in society because of the threat it poses to thousands of people. In contrast‚ nuclear medicine has positive aspects that
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Module 4: 10. Strong Bases: NaOH‚ KOH‚ Na2CO3‚ NaHCO3‚ Na3PO4‚ NaHPO4‚ Strong Acids: Fe(NO3)3‚ HCL‚ HNO3‚ Al(NO3)3‚ NiCl2‚ H2SO4 11. Acidic Neutral Basic NaCl KNO3 NaOH HC2H3O2 Na2CO3 NaC2H3O2 NaHCO3 Fe(NO3)3 NaNO3 Na3PO4 HCl MgSO4 KOH HNO3 Na2SO4 NaHPO4 CuSO4 NaNO2 CoCl2 Al(NO3)3 NiCl2 H2SO4 KCl NH4Cl 12. CuSO4 CuCO3.Cu(OH)2(s) + 2 H2SO4(aq) ----> 2 CuSO4(aq) + CO2(g) + 3 H2O(l) Na3PO4 Na3PO4 (aq) + 3H2O (l) --> H3PO4 (aq) + 3NaOH
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Experiment 9 : The effect of substrate concentration on enzyme activity Objective To find out the relationship between the substrate concentration and the rate of reaction by determining the number of bubbles produce Hydrogen peroxide (H2O2) is a by-product of biochemical metabolism. An accumulation of hydrogen peroxide can be deadly‚ so it has to be decomposed. One of the decomposing factors is an enzyme called Catalase. Catalase breaks hydrogen peroxide into water and oxygen. The chemical
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Properties of Different Bonds An ionic compound forms from a nonmetal and metal element. A covalent compound is formed by two non metal elements. A metallic compound is formed by two metal elements. Metallic compounds have generally high melting points‚ are loose and flexible with their electrons‚ conduct electricity well‚ and have low solubility in water. Ionic compounds are generally crystals‚ have a high melting point‚ and usually have high solubility in water and conduct electricity well when
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Question 1 Electromagnetic radiation behaves both as particles (called photons) and as waves. Wavelength () and frequency () are related according to the equation where is the speed of light (). The energy ( in joules) contained in one quantum of electromagnetic radiation is described by the equation where is Planck’s constant (). Note that frequency has units of inverse seconds ()‚ which are more commonly expressed as hertz (). Part A A microwave oven operates at 2.40 . What is the wavelength
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Decomposition Reaction-Electrolysis of Water Introduction: Demonstrate the decomposition of water in simple but very colorful and dramatic fashion on an overhead projector. Concepts: • Decomposition reaction • Oxidation–reduction • Electrolysis • pH Materials: Sodium Chloride/universal indicator solution‚ NaCl‚ 25 mL Overhead projector Pencil lead‚ 0.7 mm Battery lead with alligator clips Petri dish‚ disposable Battery‚ 9-Volt
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Name: _____________________________ Submit Worksheets for Credit Stereochemistry Workshop 1. Assign the marked asymmetric centers with R or S designations. 2. Rank each of the following sets of substituents (highest priority substituent = 1; lowest priority substituent = 4). Place the number in the blank below the substituent. (a) (b) 3. Determine the relationship between each of the following pairs of structures (enantiomers‚ diastereomers‚ constitutional isomers
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Electronics is taking over our lives Parents must have boundaries when it comes to letting their kids watch television or use the computer. Obesity‚ earning screen time‚ and doing other activities are some reasons that screen time needs to be monitored. Parents have the responsibility to encourage healthy behaviors and limit unhealthy ones for their children. School children who watch television more than two hours a week are obese. When children are watching television
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Chemistry and Society CHM/110 Xavier Villarreal November 6‚ 2011 Chemistry is a vast quantity of a person’s everyday life. A person can find chemistry in his or her daily life in the foods that a person eats‚ air a person breathes‚ soap‚ and accurately everything a person comes in contact with. Chemistry is significant in everyday life because chemicals make up everything in life. For example‚ a person’s body‚ pet‚ a desk‚ the sun‚ food‚ and drugs a person may take‚ to name a few. A person
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