Indeed‚ the war is within us. But then‚ I remember what I only need to do: to get the message across. Creativeness tells me that I need not to give the typical definition of missions. So I decided to divide the word mission into two words—miss and ion. Fortunately‚ these words turned out to be of great help. Miss‚ according to the Random House dictionary is a verb that means to fail to encounter‚ to meet or to catch. Missing an opportunity to witness is a big “no-no” in the mission field. Chances
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chloride dihydrate. 2. To determine the percentage of water in an unknown hydrate salt. 3. To calculate the water of crystallization for the unknown hydrate salt. Discussion A hydrate salt is composed of anions (negative ions) and cations (positive ions) which are surrounded by and weakly bonded water molecules. Each hydrate salt has a fixed number of water molecules associated with it‚ called waters of hydration or water of crystallization. When a salt holds waters of hydration‚ we
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transportation of chloride ions between certain cells and the extracellular fluid. In mutation ∆F508‚ the proteins with deleted phenylalanine don’t insert into the membrane resulting in ion migration of chlorine being disrupted leading to the build-up of mucus. Chlorine’s negative charge disrupts the electrical potential of the cell causing certain molecules i.e. sodium to enter. The combination of NaCl is then excreted in vast amounts. This alters the balance of ions in the blood leading to abnormal
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Dehydration Sci/241 Abbe Breiter-Fineberg 4/1/2012 Passing out‚ lethargy‚ constipation‚ dry mouth and even dry eyes are very few symptoms in the long list of signs to tell us that we are dehydrated. Being dehydrated is potentially very bad and if not taken care of a person can end up in the hospital or even dying. Many things can cause dehydration including drinking too much alcohol or simply not drinking enough water. Without ample amounts of water our bodies cannot function correctly‚
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usually difficult to predict the products of decomposition reactions. The electrolysis of water into oxygen and hydrogen gas is an example of a decomposition reaction. Double-replacement reaction is a chemical change involving the exchange of ions between two compounds. These reactions usually take place between two ionic compounds in water solutions and are shown by production of precipitate. An example of a double displacement reaction occurs between sodium chloride and silver nitrate to form
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have‚ group 1 has 1 valence electron. When group one elements become ions what are is their charge‚ their charge is +1. What are the group 2 elements called‚ they are called the alkali earth metals. List the group 2 elements‚ the group 2 elements are Beryllium‚ Manganese‚ Calcium‚ Strontium‚ Barium‚ and Radon. How many valence electrons does group two have‚ group two has 2 valence electrons. When group two elements become ions what is their charge‚ their charge is +2. What are the group 17 elements
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Unknown 2 Scheme “ Fair game” ions Cations: Na+‚ K+‚ NH4+ ‚ Ca2+‚ Mg(OH2)62+ ‚ Al(OH2)63+ Anions: SO42-‚ HSO4-‚ NO3-‚ OH-‚ Cl-‚ CO32-‚ HCO3- Insoluble Compounds: Ca(OH)2‚ CaSO4•2H2O‚ CaCO3‚ MgCO3‚ Mg(OH)2 I. Describe Sample a. Quick description of sample. Ex: Phase‚ color‚ odor‚ crystalline‚ amorphous‚ gel-like‚ powdery‚ etc. II. Flame Test a. Part 1 i. Orange Flame: Na+ is present. K+ ‚ NH4+ ‚ Ca2+‚ Mg(OH2)62 ‚ Al(OH2)63+ may also be present. ii. Purple Flame: K+ is present (no Na+
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An Introduction to Qualitative Analysis Purpose: Tests the ions of Mg2+‚ Ca2+‚ Sr2+‚ and Ba2+‚ and identify them separately. By using these observations‚ identify the unknown ion. Then tests the ions of SO42-‚ CO32-‚ Cl-‚ and I-‚identify them separately‚ and use the observation to identify the unknown. Procedure Part I - Qualitative Analysis of Group 2 Elements Mix 0.02M K2CrO4 with each Mg(NO3)2‚ Ca(NO3)2‚ Sr(NO3)2 and Ba(NO3)2 together. Secondly‚ mix 0.1M (NH4)2C2O4 instead
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way is iodine; it produces a purple vapor that interacts with a component of the fingerprint to reveal a print. Also‚ ninydrin‚ which reacts with amino acids in the print to form a blue purple color. Silver nitrate is another example; the chloride ion of salt will react with silver nitrate to produce silver chloride. Silver chloride is colorless‚ but can be seen with an ultra violent as a black or reddish color. The last one is super glue; it can be heated in an enclosed area that contains the evidence
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PAHANG TRIAL 2009 EXAMINATION CHEMISTRY PAPER 2 MARKING SCHEMES SECTION A - Structural Questions: Question 1. (a) (i) The presence of isotopes 1M (ii) Let the abundance of 63X be a %. The % abundance of 65X. = ( 100 – a ) 1M Relative atomic mass = ( 62.93 x a) + ( 64.93 x ( 100 -a) ) 1M
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