Chem 28 Problem Set 1 Date due: August 26‚ Tuesday 10:00 am General Instructions: - Place answers in 1 long ruled pad paper. - Show all necessary calculations and proper conversion of units. Final answers should be in proper significant figures - Box all final answers 1.) In a precipitation reaction‚ 150.0 mL of 0.200 N NaOH was mixed in 50.0 mL aluminum nitrate solution to precipitate all the Al3+. a.) What is the normality of Al(NO3)3? b.) What is the molarity of the solution in 1
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Ionic Reactions Introduction: Today we are going to observe the chemical changes when mixing two solutions. Some will change colors‚ produce gases proving if the solutions are soluble or insoluble. Materials and Methods: I first pulled out the small wells and place two drops of the Cobalt (II) Nitrate in seven of the wells. I then moved to the next row and placed two drops of Copper (II) Nitrate in the next row‚ into seven of the wells‚ and so on with the other three Nitrates. I then cut off
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GENERAL 1. A labourer is paid N5‚400:00k per month. What is his total salary in 1 3/4years? (a) N113‚40:00 (b) N64‚800:00 (c) N97‚200:00 (d) N129‚600:00 ANS A 2. Which of the following will sink when placed on water? (a) Ball (b) Plastic Cup (c) Balloon (d) Eraser ANS D 3. The following are domestic birds except (a) Duck (b) Pigeon (c) Turkey (d) Vulture ANS D 4. A boy buys a biscuit for N4 and sells it at a profit of 20%. Find the actual price and the selling price? (a) i
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Chemistry Final Study Guide Matter as anything that has mass and takes up space. Significant figures refers to digits that were measured. When rounding calculated numbers‚ we pay attention to significant figures so we do not overstate the accuracy of our answers. Rules: -All nonzero digits are significant. -Zeroes between two significant figures are themselves significant. -Zeroes at the beginning of a number are never significant. -Zeroes at the end of a number are significant if a decimal
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CHEMISTRY 101 FINAL EXAM SECTIONS 572-580 Dr. Joy Heising FORM 4N December 7‚ 2001 Directions: 1. Fill out your scantron sheet. a. Do not forget to include your SIGNATURE and ID number. b. Dept = CHEM‚ Course No. = 101 c. If you want your scores posted‚ mark A under the option column 2. Use a #1 or #2 pencil for marking the answer sheets. circles completely. 3. DO NOT write on the envelope. 4. Read each question carefully‚ then choose the best answer for each question. There is no penalty
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Tam Ho Professor Yelena Shekhtman Academic Research and Writing II March 19‚ 2013 CSCI1105 Word Processing Assignment Life and Death The cartoon “Death is a Bitch” from the series “The Family Guy” and Edgar Allan Poe’s “The Masque of the Red Death”‚ though very different in content and tones while approach the matter‚ both contain very original messages about living and dying. Through the messages‚ the cartoon and the story deliver an encouraging attitude towards living and convey a positive
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Panther ID: NAME: FLORIDA INTERNATIONAL UNIVERSITY Department of Chemistry CHM 2211-U02– ORGANIC CHEMISTRY II PRACTICE EXAM I CHM 2211-U01 SAMPLE EXAM I‚ Page 2 Type of Vibration C-H Frequency (cm-1) 3000-2850 1450 and 1375 1465 3100-3000 1700-1000 3150-3050 1000-700 ca. 3300 2900-2800 2800-2700 1680-1600 1600-1400 2250-2100 1740-1720 1725-1705 1725-1700 1750-1730 1700-1640 1810 and 1760 1300-1000 Intensity s m m m s s s m w w m-w m-w m-w s s s s s s s Alkanes -CH3 -CH2Alkenes
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *6145201818* CHEMISTRY Paper 3 (Extended) Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams‚ graphs or rough working. Do not use staples‚ paper clips‚ highlighters‚ glue or correction
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Chem Final Exam Combination Combination reactions‚ also known as synthesis reactions‚ involve the combination of two or more substances into a single new substance: A + B ---> AB Many metal oxides‚ for example‚ absorb carbon dioxide (CO2) from the air to form carbonates: CaO(s) + CO2(g) ---> CaCO3(s) Decomposition Decomposition reactions represent the reverse of the combination process in that one substance breaks down into two or more substances: AB ---> A + B Water‚ or H2O‚ for example
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1. 2. Qualitative Density 3. 4. Potential energy chemical equation 5. 6. kinetic energy physical properties 7. 8. particulate submicroscopic 9. 10. hypothesis intensive properties 2. The ratio of the mass of an object to its volume 4. A written representation of a chemical reaction‚ showing the reactants and products‚ their physical states‚ and the direction in which the reaction proceeds 6. 1. Nonnumerical experimental
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