Category: Chemistry

  • Title: Airborne Pollutants: Sources, Effects, and Solutions

    Symbol or structure of the pollutant.
    Source or origin of the pollutant (is it synthetic or natural?)
    Discussion describing how the pollutant becomes airborne and migrates into the atmosphere.
    Describe how the chemical interacts with other molecules and chemicals in the air. This explanation must include chemical equations.
    Discuss how the pollutant causes harm to humans, other living beings, and/or the environment.
    Discuss the current use of the pollutant and how policies, technology, and/or public knowledge may be affecting its concentration in the environment and what that means for the overall global environment. 
    Provide a reference list of your cited sources. All references should be sources published within the last 10 years.
    Word count requirements: Minimum of 500 words.

  • “Lab Completion: Website Instructions”

    Please see attachment with instructions on how to complete the Lab. Complete the Lab inside the website and notify when complete please.

  • Title: Predicting Alkene Stability and E2 Elimination Products Using Molecular Modeling

    Predict Stability Using Molecular Modeling of Alkenes
    Molecular models are a great tool for representing and manipulating the structures and reactions of molecules, and those properties that are dependent on these three dimensional structures. Molecular modelling includes hands-on modeling with physical molecular modeling kits, theoretical, and computational models to mimic the behavior of molecules (Leach, 2009). Molecular modelling is used to study the structure, dynamics, surface properties, and thermodynamics of inorganic, biological, and polymeric systems (Aminpour et al, 2019).
    For example, the sis and trans isomerization in cyclic alkenes can be discovered using the results of molecular modeling (Barrows, 2004).
    This week you have learned a lot about unimolecular and bimolecular elimination reactions and the stability of alkenes.
    Instructions:
    Use your molecular modeling kit and build these three alkenes.
    Three Alkenes
    Credit: Smith, Organic Chemistry
    Rank the alkenes shown in the ball-and-stick models (A—C) in order of increasing stability.
    Take a photo of the models and upload to this assignment.
    What is the major E2 elimination product formed from each alkyl halide? Draw the products by hand.
    Image of E2 elimination product formed from each alkyl halide
    Credit: Smith, Organic Chemistry
    Build the model of each E2 elimination product.
    Take a photo and upload into this assignment.
    References:
    Leach AR (2009). Molecular modelling : principles and applications. Pearson Prentice Hall.
    Aminpour, M., Montemagno, C., & Tuszynski, J. A. (2019). An Overview of Molecular Modeling for Drug Discovery with Specific Illustrative Examples of Applications. Molecules (Basel, Switzerland), 24(9), 1693.
    Barrows, S. E., & Eberlein, T. H. (2004). Cis and trans isomerization in cyclic alkenes: A topic for discovery using the results of molecular modeling. Journal of chemical education, 81(10), 1529.  

  • Title: “Interpreting Data and Concluding Findings from a Lab Report on the Effects of Temperature on Enzyme Activity” In the lab report, the effects of temperature on enzyme activity were investigated using the enzyme catalase and its reaction

    Attached you will find a pdf. I need a interpretation of data paragraph
    written about the lab report, and then a conclusion. Please make sure
    this is not plagarized or AI written. Thanks!

  • “Additional Questions: Density and Volume Calculations”

    Additional Questions (Show Work)
    1. What is the density of a 65.00-g object that is immersed in a graduated cylinder whose
    water volume rises from 28.3 mL to 45.6 mL?
    2. A flask that weighs 218.5 g is filled with 125.5 mL of NaCl solution. The total weight of the
    flask and NaCl solution is found to be 354.6 g. Calculate the solution density.
    3. Three beakers contain different volumes of water of 8.1 cm3, 0.64 L, and 2.7 dL. If all
    three volumes were mixed together in a larger container, what would the final volume in
    milliliters be?
    4. What is the volume of a 0.240-lb sample of ethyl alcohol if its density at the temperature
    in question is 0.739 g/mL?
    5. The usual dose of amoxicillin for children and babies older than 3 months, who weigh
    less than 40 kg, is 20 to 40 milligrams (mg) per kilogram (kg) of body weight per day,
    divided and administered every 12 hours. If the drug amoxicillin is 125 mg / 2.5 mL oral
    suspension, how many teaspoons in 24 hours should be given to a child who weighs 54
    pounds for the maximum dose? (One teaspoon is 5 mL)

  • Title: Lab Report Writing for Melting Point and Solubility Experiments Lab Report #1: Melting Point Experiment Experiment Title: Determining the Melting Point of an Unknown Substance Purpose: The purpose of this experiment is to

    For each lab you perform, you will submit a lab report due the following week. The report will consist of the white copies of your lab notebook where you will include the pre-lab (experiment’s title, purpose, introduction, procedure, table of constants, reactions) and the data, results, conclusion, and answers to any questions in the experiment.
    I will provide the experiment, results, and an example below of what it should look like.
    Make two different lab reports. one for melting point and another for solubility
    2 pages for each. 4 in total.

  • Title: “Tackling Toxic E-Waste: Potential Solutions and Actions”

    Please take a look at the slides and potentially fix or elaborate if needed with speaker notes 
    Slide 1: Please add speaker notes
    slide 2: Search potential solutions as what can we do to reduce or eliminate toxic ewaste
    possibly elaborate or fix the powerpoint and add speaker notes
    slide 3: Search potential solutions as what can we do to reduce or eliminate toxic ewaste
    possibly elaborate or fix the powerpoint and add speaker notes
    This is a group project so I will attach the whole powerpoint and i will attach my part                 seperately
    The group powerpoint is titled draft presentation pdf
    My part is titled chemistry presentation pdf

  • “Addressing the Growing Problem of Toxic E-waste: Potential Solutions and Actions” Slide 1: Title slide – “Addressing the Growing Problem of Toxic E-waste: Potential Solutions and Actions” Speaker notes: – Begin by introducing the topic

    Please take a look at the slides and potentially fix or elaborate if needed with speaker notes 
    Slide 1: Please add speaker notes
    slide 2: Search potential solutions as what can we do to reduce or eliminate toxic ewaste
    possibly elaborate or fix the powerpoint and add speaker notes
    slide 3: Search potential solutions as what can we do to reduce or eliminate toxic ewaste
    possibly elaborate or fix the powerpoint and add speaker notes

  • “Calculating Density and Concentration: A Simple Lab Report”

    this is a easy lab report . just two calculations and one focus question. if u can’t do for $13. pls don’t place a bid

  • “Quantifying the Calcium Carbonate Content in Eggshells: A Titration Method Investigation”

    Title: Research Assignment: Determining the Percentage of Calcium Carbonate (CaCO3)in Eggshells 
    Objective: 
    The objective of this research assignment is to investigate and determine the percentage of calcium carbonate ((CaCO3) in eggshells  by titration method. (use scientific literature, online resources, and experimental data.)
    Provide a list of all references cited in the assignment, including scientific articles, books, websites, and other sources used for research
    Follow the instructions from the attached document: