Experiment 5 Determination of Empirical Formulas of Hydrate and Oxide Compounds Room #216 Locker# 1137 Date of Experiment: May 11‚ 2014 Date of Submission: May 16‚ 2014 Purpose: To determine the identity of an unknown hydrated salt calculating the percent water loss after heating and also to determine the empirical formula of magnesium oxide. Results: Table 1: Determination of the mass of waters of hydration of an unknown hydrated compound. Hydrated Compound code: C-14 Mass
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acid + metal -------->salt + hydrogen acid + metal oxide--->salt + water acid + metal carbonate---->salt + water + carbon dioxide Element | Symbol | Valency | Hydrogen | H | 1 | Oxygen | O | -2 | Carbon | C | 4 | Calcium | Ca | 2 | Iron | Fe | 2 | Aluminium | Al | 3 | Sodium | Na | 1 | Potassium | K | 1 | Magnesium | Mg | 2 | Zinc | Zn | 2 | Copper | Cu | 2 | Silver | Ag | 1 | Lead | Pb | 2 | Chloride | Cl | -1 | Sulphate | SO4 | -2 | Hydroxide | OH
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energy in‚ but doesn’t let all of the heat energy out‚ similar to a greenhouse. Nitrous oxide is known to have a significant global climatologic impact as a naturally occurring greenhouse gas. After carbon dioxide and methane‚ nitrous oxide is the third most climatologically significant greenhouse gas. Greenhouse gases act like a warming blanket in the troposphere and prevent radiative cooling. Nitrous oxide is a particularly potent greenhouse gas with 300 times the global warming potential of carbon
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Pollution Caused By Factories Factory related pollution is the number one source of pollution in the United States. Factory pollution accounts for more than half the volume of all water pollution‚ as well as for the most deadly of pollutants. More than 365‚000 manufacturing factories consume vast quantities of fresh water to carry away wastes of several different types. This waste water from industrial factories is discharged into lakes‚ oceans and streams‚ which eventually disperse the polluting
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(c) tropospheric ozone 6. The greatest emission of sulfur dioxide comes from (C) Industrial processes 7. The least amount of nitrogen oxide emissions comes from (A) on road vehicles 8. The accumulation of tropospheric ozone at night depends mainly upon the atmospheric concentrations of (B) volatile organics 1. What are they? The six criteria air pollutants are sulfur dioxide‚ nitrogen oxides‚ carbon oxides‚lead‚particulate matter and tropospheric ozone. These six pollutants significantly threaten human health‚ ecosystems and/or structures
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used by millions of athletes today‚ and there have been a lot of questions raised about the long-term effects of them. There are a lot of different brands in this industry‚ but most of the products contain the same main ingredients: Creatine‚ nitric oxide‚ vitamin B‚ and caffeine. There has been quite a bit of research done on these ingredients individually‚ but together they have not been studied very much‚ which is why a lot of athletes avoid them. Another problem with these products is that athletes
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Basic HDD Components Many types of HDDs are on the market‚ but nearly all share the same basic physical components. Some differences might exist in the implementation of these components (and in the quality of the materials used to make them)‚ but the operational characteristics of most drives are similar. The basic components of a typical HDD are as follows (see Figure 9.9): ■ Disk platters ■ Read/write heads ■ Head actuator mechanism ■ Spindle motor (inside platter hub) Chapter 9 ■ Logic
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Trends in Ionization Energy Period trends All the atoms in the same period have the same valence energy level and the same shielding. The increasing nuclear charge increases the attraction of valence electrons so ionization energy generally increases from left to right. The exceptions at full and ½ filled orbitals break the pattern because removing an electron from a stable (low energy) configuration will require more energy. Li has a low 1st ionization because 2 core electrons block the +3 nuclear
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Superconductivity Jaron Hartman In collaboration with Stefan Eccles Senior Lab Abstract: Superconductivity is the phenomena of a material to have an electrical resistance of zero when cooled to a certain temperature known as the critical temperature. The phenomenon of superconductivity was first observed in 1911 by Heike Kamerlingh Onnes when cooling mercury down to a temperature of 4.2 K. Since then‚ many advances in the field of superconductivity have been made. In 1986‚ superconductivity
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active metals and they will react with very hot water or steam to form the oxide and hydrogen gas. * The oxides of all of these first metals resist reduction by H2. * The next six metals (iron - lead) replace hydrogen from HCl and dil. sulfuric and nitric acids. Their oxides undergo reduction by heating with H2‚ carbon‚ and carbon monoxide. * The metals lithium - copper‚ can combine directly with oxygen to form the oxide. * The last five metals (mercury - gold) are often found free in
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