Part I Multiple choice or short answer questions 1) (2 points) Identify a solid a. Definite volume and no definite shape b. no definite volume and no definite shape c. definite volume and definite shape 2) (2 points) A substance composed of two or more elements in a fixed‚ definite proportion is a. A solution. b. A heterogeneous mixture. c. An alloy. d. A homogeneous mixture. e. A compound. 3) (2 points) Read the water
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noncovalent interactions is true or false. If false‚ change the statement so it is true a. Ionic bonds are the result of electrostatic attraction between two ionizes functional groups of opposite charge. b. Hydrogen bonds result from interaction of an anion with a hydrogen atom. c. Hydrophobic interactions are electrostatic attractions between nonpolar functional groups and water. d. H+ and OH- interact together by ionic bonding to form water. 2. Identify the type of bonding between each pair of atoms and
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– Mr Most substances exist as; - compounds if ionic - molecules if covalent We can use Ar’s to calculate the ‘average mass of ONE unit of a substance’ this is called the Mr (see also topic 9) E.g. Calculate the Mr for sodium carbonate 3Na2CO3. Ar (Na) = 23 Ar (C) = 12 Ar (O) = 16 The number 3 in front of the formula has been ignored because by definition Mr is the mass of ONE unit of a substance whether the substance is ionic or covalent. Molar mass This is the mass of one
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Washington D.C. is the capital of the United States of America and the president of the United States lives there. It can be say that the Washington D.C. is the capital city of the world. Washington D.C. is a rich and expensive city with beautiful architectures and nature‚ and respectful community and residents with high security services. I lived and visited many countries‚ also I visited some other states and cities in the United States‚ but the Washington D.C. was different than all of them. They
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| Art History MidtermStudy online at quizlet.com/_8m0yq | 1. | A Classical colonnade around a building or courtyard is called a | | peristyle | 2. | A half-column attached to a wall is called a/an | | Engaged column | 3. | A plain or decorated slab on a Doric frieze which alternates with the triglyphs is called the | | Metopes | 4. | A series or row of columns usually spanned by lintels is called a/an: | | Colonnade
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NaOH: Complete Equation: HCl (aq) + NaOH (aq) H2O (l) + NaCl (aq) Net Ionic Equation: H+ + OH- H2O(l) Calculations (10mL 0.1M HCL‚ 100mL H20‚ 7.8mL NaOH): # mols NaOH = 0.1M (known concentration) x 0.0078L (titrated volume) = 0.00078mol 1:1 ratio mol NaOH to HCL = 0.00078 mol HCl M HCl= = 0.078 M HCl Standardization of NaOH vs KHP Complete Equation: NaOH + KHC8H4O4 KNaC8H4O4 + H2O Net Ionic Equation: OH- + HC8H4O4- C8H4O42- + H20 Calculations (0.3291g KHP‚ 18mL
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but the identities still have to be confirmed. A general rule of solubility is like dissolves like. Non-polar compounds‚ most organic compounds‚ are more soluble in non-polar solvents than in polar solvents. Ionic and polar compounds are more soluble in polar solvents like water. Ionic forms of the organic compound can be produced by
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TextBooks Sr No T-1 T-2 Title Engineering Chemistry Chemistry Reference Books Sr No R-1 Other Reading Sr No OR-1 OR-2 OR-3 OR-4 OR-5 OR-6 OR-7 Journals articles as Compulsary reading (specific articles‚ complete reference) http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-4601 ‚ http://www.springer.com/chemistry/electrochemistry/journal/10800 ‚ http://www.sciencedirect.com/science/journal/13882481 ‚ http://www.springerlink.com/content/100224/ ‚ http://www.sciencedirect.com/science/journal/00108545
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cations ... Calcium‚ strontium and Barium form white precipitates of their oxalates with C2O4-2 ions. [PDF]24 Solubility Rules - Arapahoe High School arapahoe.littletonpublicschools.net/portals/7/.../solubilityruleslab.pdf How do we know which ionic compounds form precipitates and which do not? We can make a large number of mixings involving many different cations and an- ions. By observing the results ... Which anions generally do not form precipitates? Predicting Precipitation Reactions- Solubility
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volatile liquid under known temperature and pressure. Introduction Molar mass or gram molar mass is the mass of the substance under consideration without distinguishing whether a substance is an element ‚ a molecule or an ionic compound. These elements‚ molecules or ionic compound could be solid gas or liquid. The molar mass of gas or vapor could be measured if the gases obey the law of Ideal Gas . The mass of the gas is found under known temperature and pressure. Method/procedure To measure
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