formulae Ionic equations Mill Hill County High School THE MOLE Since atoms are so small‚ any sensible laboratory quantity of substance must contain a huge number of atoms: 1 litre of water contains 3.3 x 1025 molecules. 1 gram of magnesium contains 2.5 x 1022 atoms. 100 cm3 of oxygen contains 2.5 x 1021molecules. Such numbers are not convenient to work with‚ so it is necessary to find a unit of "amount" which corresponds better to the sort of quantities of
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the U.S.P. and N.F. contain varying quantities of water either as water of crystallization (hydrates) or as water in the adsorbed from. i. Water of crystallization is water that occurs in crystals but is not covalently bonded to a host molecule or ion. * “water of crystallization" refers to water that is found in a crystalline framework of a metal complex but that is not directly bonded to the metal ion. * A salt with associated water of crystallization is
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The process of naming compounds allows chemists to communicate formulae in words rather than in chemical symbols. There are‚ however‚ a few rules about naming compounds which need to be known in order to write a formula in word form or translate a compound in word form into chemical symbols. Ionic compounds If the compound is ionic‚ then the name of the cation (usually metal) comes first‚ followed by the ’compound’ name of the anion. To find the compound name of an anion‚ replace the end of the
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Lab Report Electrophoresis: Using Electricity to Separate Molecules Answer the following questions about the results of this activity. Record your answers in the boxes. Send your completed lab report to your instructor. Don’t forget to save your lab report to your computer! Activity 1 – Calibration Record your data from Activity 1 in the boxes below. Enter the data (number of bands‚ description of the band patterns) you collected for the protein ladder in the appropriate columns
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A REPORT ON Protein/ Peptide Drug delivery through Oral route Submitted in fulfillment of the Study in Advanced Topic (BITS G513) By S. Lakshmi Anusha (2008HS08605H) BIRLA INSTITUTE OF TECHNOLOGY & SCIENCE‚ PILANI HYDERABAD CAMPUS 29th April‚ 2013. 1 A REPORT ON Protein/ Peptide Drug delivery through Oral route Submitted in fulfillment of the Study in Advanced Topic (BITS G513) By S. Lakshmi Anusha (2008HS08605H) UNDER THE SUPERVISION OF Dr. Punna Rao Ravi Assistant Professor
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are held together by large electrostatic forces. Bonding in molecular substance is caused by the sharing of electrons by atoms. When the stable aggregates resulting from covalent bonding contain relatively small numbers of atoms‚ they are called molecules‚ if aggregates are very large and include essentially all the atoms in a macroscopic particle‚ it is called macromolecular. Bonding in metallic substances is caused by the free movement of electrons. Materials Test tubes‚ Bunsen burner‚ distilled
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between the two holds them together. Ionic bonds are useful because in a liquid state it can conduct electricity. This is possible because it contains ions. That doesn’t conduct electricity in the solid state because there is not enough room within the molecule. The substance produced by this bond is table salt. Other salts‚ such as CaCl (rock salt) are formed in the same way and although they have a different crystalline structure they do possess the same physical properties. Covalent bonds‚ as stated
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stoichiometry of chemical formulas and reactions‚ gas laws and kinetic molecular theory‚ solutions and solubility‚ energy change in chemical reactions and thermochemistry‚ quantum theory and electron configuration‚ bonding theories and shapes of molecules‚ intermolecular forces of attraction and phase change‚ and acid-base theories‚ are some of these topics. Required Material: Text Book; Chemistry - A Molecular Approach‚ Nivaldo J. Tro; 3rd Edition‚ available in the Pierce Bookstore. MasteringChemistry
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Mole Project Mole S‘Mole... What‘s is it all about 1.Find and record two definition of mole wich are science related? Definition 1: a chemical mass unit‚ defined to be 6.022 x 1023 molecules‚ atoms‚ or some other unit. The mass of a mole is the gram formula mass of a substance. Definition 2: A small congenital growth on the human skin‚ usually slightly raised and dark and sometimes hairy‚ especially a pigmented nevus. 2.Wich of these moles are studied in Chemistry? The first of the two
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smallest first ionization energy‚ which has the largest?1) Li(L)‚ Ba‚ K(S)2) B(S)‚ Be‚ Cl(L)3) Ca(s)‚ C‚ Cl(L) Order the following compounds according to their expected lattice energies: LiClKClKBrMgCl2 MgCl2>LiCl>KCl>KBr Ranked by Smallest molecules have the largest lattice energy. calculate the overall energy change in kilojoules per mole for the formation of CsF(s) from its elements using the following data: Eea for F(g) = -328 kj/mol‚ Ei1 for Cs(g) = +375.7 kj/mol‚ heat of sublimation for
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