Chemical Earth 1. The living and non-living components of the Earth contain mixtures Construct word and balanced formulae equations of chemical reactions as they are encountered 1. Build a word equation Reactants on left‚ Products on right 2. Convert word equation into chemical formula for the reactants and products Using valency rules 3. Balance the equation Adjust coefficients to get equal numbers of each kind of atom on each side 4. Specify the physical state for each species present
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References 1.) Lehman‚ John. Operational Organic Chemistry‚ 3rd Edition. Experiment 4 (pp. 38-45; 680-687; 644-650)‚ Prentice-Hall‚ 1999. 2.) Laboratory Reference Manual: Experiment 3. Retrieved from: http://academic.reed.edu/chemistry/alan/201_202/lab_manual/expt_salicylic_acid/background.html 3.) Lab 5: Synthesis of Salicylic Acid. Retrieved from: http://academic.evergreen.edu/curricular/whatscookin/Lab%20five%20%20methyl%20saliclate.htm 4.) Handout: Synthesis of Salicylic Acid. Retrieved
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Evelyn Ramos CHEM LAB 201-003 Professor Ruddock Experiment #4 - Chemical Reactions Performed: 3/6/13 DUE: 3/13/13 Pre Lab Questions: 1. Before you can write a chemical equation‚ what must you know? You have to know what the products and reactants are. 2. What observations might you make that suggest that a chemical reaction has occurred? If a gas is produced or precipitates are formed that indicates chemical reaction. Also‚ if color changes occur or
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Chapter 8 vocabulary Chemical equation- represents‚ with symbols and formulas‚ the identities and relative molecular or molar amounts of reactants and products. Precipitate- a solid that is produced as a result of a chemical reaction in solution and that separates from the solution Coefficient- is a small whole number that appears in front of a formula in chemical equations Word equation- an equation in with the reactants and products in a chemical reaction are represented by words. Formula-
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Spring Practice Final 2011 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. The volume of a gas is 400.0 mL when the pressure is 1.00 atm. At the same temperature‚ what is the pressure at which the volume of the gas is 2.0 L? a. | 0.5 atm | c. | 0.20 atm | b. | 5.0 atm | d. | 800 atm | ____ 2. The pressure of a sample of helium is 2.0 atm in a 200-mL container. If the container is compressed to 10 mL without changing
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8. Terfenedine is an amino diol that is the active ingredient in the antihistamine Seldane. Mass spectral analysis of terfenedine shows a molecular ion at m/z = 471 and a peak at m/z = 472 which is 35.5% the height of the molecular ion. Terfenedine is known to contain C‚ H‚ O and N. (a) Suggest five molecular formulas for terfenedine. (b) Terfenedine has an even number of carbons and contains nine double bonds and four rings. Based on this additional information‚ what is the formula for terfenedine
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Measurement in Chemistry Assignment‚ Due 22 March‚ Surname A-D Instructions: All questions must have the correct units and correct number of significant figures. Show all calculations and carry the units throughout. Submit your answers on a new page. Include your name and student number. Q1. Report the number of significant figures in each of the following: a. 0.20 b. 9.05 c. 164300 (1 mark) Q2. Report each of the
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The aim of this experiment it to analyze the solution of Ba(OH)2 of an unknown concentration. In order to obtain the quantitative analysis‚ the exact amount of a particular compound or element present in sample‚ two procedures were performed. The first procedure was by conductimetric titration and by gravimetric determination. The conductivity was analyzed during the reaction between the sulfuric acid (H2SO4) and barium hydroxide (Ba(OH)2). Through the conductivity‚ the equivalence point can be determined;
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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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Bismuth was discovered in the fifteenth century by a french chemist named Claude Geoffroy the Younger. At first his colleagues thought he was crazy‚ thinking that he had found lead or tin. But Geoffroy had distinguished it as a unique element. The name Bismuth comes from the word Wisuth meaning “white mass”‚ because pure Bismuth is white. When pure bismuth is mixed with lead‚ tin‚iron or cadmium the multi colored Bismuth is created. Bismuth falls under the pnictogen family. This family consists
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