Description This assignment consists of significant figures conversions and rounding. Additionally, a few analysis questions about the problems are included and one excel graph.
Description Attached a doc of the questions and the procedures I want a Lab report for "Concentration and Spectroscopy" The lab report should contain Introduction, Purpose, Procedure, Data/Observations, Questions and answers, Calculations and Results, Conclusion/Discussion, and References. - In procedure, all steps should be written (but by paraphrases them, not copy and paste) for all parts mentioned in the doc - All data should I get should be written on Data/Observations. - Answer all the questions were asked in Questions and answers part. - Three sources should be cited at least. - All calculation should be written on Calculations and Results. - Conclusion/Discussion part should talk about a summery of the report and possible errors might happen. - all steps are on the docs uploaded. - the data tables must be fill on the lab report. ( all tables must be on the lab reports as well ) - the simulation's link is https://phet.colorado.edu/en/simulation/beers-law-... NOTE: THE LAB REPORT IS SAPARET, DO NOT WRITE ON THE ATTACHED DOC . DO NOT PLAGIARIZE ANYTHING, SPECIALLY FROM THE ATTACHED DOC AND ITS PART.
Description 1. a) Write an equation describing the reaction of HCl with water. b) Hence, write an equation describing the reaction between an aqueous solution of ammonia and hydrochloric acid. Indicate the acid/base conjugate pairs. 2. Calculate the energy absorbed by the calorimeter alone, qcalorimeter. Refer to Laboratory Manual, Page 2–3. 3. Calculate the energy absorbed by the contents of the calorimeter, qcontents. You may assume that the specific heat and density of the solution equals that of pure water. Refer to Laboratory Manual, Page 2–3. 4. Calculate the total thermal energy, qreaction, of the reaction. 5. Calculate the thermal energy per mole of reactants. Is this energy released or absorbed? 6. Was the reaction exothermic or endothermic? 7. Report the value for the molar enthalpy of neutralisation (?Hneutralisation) of NH3(aq) with HCl(aq). Be sure to quote the correct units and comply with sign conventions. This value will vary with the concentration of the reactants, so when quoting your ?Hneutralisation you should state the concentration at which it was determined. 8. Calculate the energy required to decrease the temperature of the contents of the calorimeter by the observed ?T (qcontents). You may assume that the specific heat and density of the ammonium chloride solution are the same as pure water. (Remember, mcontents = the total mass of everything you have added to the calorimeter.) 9. Calculate the energy transfer for the calorimeter alone (qcalorimeter). 10. Did energy flow from the calorimeter to its contents or vice versa? 11. Calculate the enthalpy change when one mole of ammonium chloride, NH4Cl(s), is dissolved in water. Record the concentration of the resulting solution as this will affect the value obtained. 12. a) State Hess’s Law. b) How does Hess’s Law apply in this experiment? 13. In Part One you examined a spontaneous process that was exothermic. In Part Two you examined a spontaneous process that was endothermic. What does this tell you about a spontaneous process? 14. You have considered spontaneous reactions with positive and negative enthalpy changes (?Hreaction). Is it possible to predict the spontaneity of a process given the enthalpy change of that process alone? If not, what does determine spontaneity and thus what other factors must also be considered? (Use an equation to support your answer.)
Description Please complete these tables for my chemistry lab Please watch this video here to get more information how to fill the tables Data Table 1 Activity 1 Lewis Dot Structures Group 1 Molecules Group 2 Molecules Group 3 Molecules Chemical Formula BeCl2 BF3 CH4 CO2 NH3 H2O O2 HCN H2CO Dot Diagrams Electrons Central Atom Lewis Structure Activity 3 Molecular Geometry Group 1 Molecules Group 2 Molecules Group 3 Molecules Domains Lone Pairs Geometry Bond Angle Line Drawing Activity 4 Bonding and Polarity Group 1 Molecules Group 2 Molecules Group 3 Molecules Bond Electronegativity Bond Polarity / Type Ionic, Polar Covalent, Non polar Covalent Bond Dipole Moment Molecule Polarity Data Table 2 Bonding Pair Electronegativity Difference Type of Bond Bond Polarity (position of dipole arrow) C and H N and H H and O Xe and F H and Cl O and O Data Table 3 Straight-Chained Hydrocarbons Insert drawings, not images from the internet. Class Type of Bonding General Formula Alkanes Alkenes Alkynes Example Structural Formula Shape around the Carbon Ethane C2H6 Ethene C2H4 Ethyne C2H2 Cyclic and Acyclic Compounds Insert drawings, not images from the internet. Cyclohexane Hexane Skeletal Model
Description I need help completing my chemistry lab. I have attached the assignment. There are about 7 short answer questions once the experiment is complete.
Description Directions to describe how this unit project is a test intended to encompass all that they have learned about chemicals and chemical reactions in the unit. PART A Follow the example of sodium chloride as you fill out this table. Using the information given, fill in the empty columns. PART B Activity series are prepared by comparing single-displacement reactions between metals. Based on observations, the metals can be ranked by their ability to react. However, reactivity can be explained by the ease with which atoms of metals lose electrons. Using information from the activity series, identify the locations in the periodic table of the most reactive metals and the least reactive metals. Using your knowledge of electron configurations and periodic trends, infer possible explanations for the metals’ reactivity and position in the periodic table. PART C Write two of your own sample problems that are descriptions of how to solve a mass-mass problem. Assume that your sample problems will be used by other students to learn how to solve mass-mass problems. Include the problem, the step-by-step process to solve the problem, and the solution. "Make sure to show your work and use the correct amount of significant figures. " PROJECT RUBRIC HERE Project Rubrics
Description I need you to answer these 11 questions depending on the experiment attached: 1) What questions will be answered with the results obtained from this experiment? 2) What kinds of selective precipitation will be used to detect the presence of metal cations? What kind of selective precipitation will be used to detect the presence of anions? 3) What is the main question this experiments seeks to answer? 4) What is the best way to insure that there are no false positives or that there is not contamination or interference from unwanted ions in the solution? 5) How is selective precipitation specifically used to identify unknown ions in this experiment? 6) What technique is used to separate precipitate from the ions that remain dissolved in the solution? What techniques are used to treat the precipitates for additional analyses? 7) Discuss the importance of selective precipitation. 8) What results will be collected and recorded in your lab notebook? 9) What can be expected if the ions are correctly identified? What are some things that might prevent the ions from being correctly identified? 10) What is this experiment designed to measure?What will the results NOT tell us about the experiment? 11) What special safety precautions do you need to be aware of for this experiment?
Description 1) How many acetyl CoA will you make by completing beta oxidation of a triacylglycerol containing all the same length fatty acids of 14:0. 2) A fatty acid that is represented by the following symbol, 10:0, will produce how many NADH molecules when it goes through beta oxidation in the mitochondria?
