Category: Chemistry

Research Project: Greenhouse Gases Write an essay (minimum of 1000 words; word count does not include Works Cited/References) on Greenhouse Gases addressing the following four areas: 1. What is greenhouse effect? 2. What are the various sources of greenhouse gases? 3. List names, formulas, and their relative contribution to greenhouse effect, of four different greenhouse gases. 4. What YOU can do to prevent/minimize effects of greenhouse gases on the environment? You may use graphs, pictures, diagrams, etc., in your essay. This project must be submitted as a word document or a pdf file. No other types of file formats will be accepted. Acknowledge your sources via in-text citations, each of which corresponds to an entry in an alphabetical list of works at the end of your paper (Works Cited or References). To do the Works Cited/ References page: Include the author (last name and initials), date (year only), title of the article (capitalize only the first letter of the title and any proper nouns), title of the magazine (periodical) in italics, volume (italic), issue in parentheses, and page numbers. Example. Smith, C. J. (2014). Chemical Elements. Time Magazine, 4(2), 35-42. If in a book: Include the author, date, title, city of publication, state of publication (abbreviation like AL for Alabama or if a country other than USA write out), publisher, and page numbers. Example: Raven, Johnson, Losos, & Singer, 2014. Biology (7th ed.). New York, NY: McGraw- Hill, 150-160. If a website: Include the author, date, title of the article, title of periodical (just like for a magazine) or title of the site if it isn’t actually an article, date retrieved, and the entire website address.

Respond to the question below for Module 7:
Question:
What class of chemical reactions provide energy for most of civilization?
Remember that you will need to first respond to the question posted by your instructor using a specific example.

This essay should answer 3 part in the attachment.
Your answers should be typed, with synthetic schemes created using Chemdraw. The length should be between 2 and 5 pages, including references, using at least 11-point font and 25 mm margins. Clarity and conciseness are key for credit.
You must show the commercial availability of starting materials by providing a link to a supplier’s webpage with prices in GBP. Standard peptide synthesis reagents do not need proof of availability.
Use relevant literature in your answer and cite up to 20 references in RSC formatting. You can refer to required readings or other sources. Online tools like Scifinder and Reaxys can help find literature protocols and starting materials.

You can create your document either using a digital structure drawing tool (e.g., Chemdraw) or by hand as long as is clear drawings. Your argument should be logically structured, highlighting the key information that led to your conclusion. Simply providing a structure with assigned NMR peaks is not enough.
Your document must not exceed five pages.
Your document must have reference of literature and it is excluded from the page count.
Your document must follow (11pt font, single-spaced, with 2 cm margins), including any diagrams.

you have to write a whole report. the rubric and guide will be attached below. the experiment and data are also below. please note that the first pdf in its last picture 6, 7 questions are solved and i will attached. the discussion part should include these and the part c question from 1 to 8. i did answer these questions but please make sure i did the right thing.

The purpose of this assignment is to develop your technical writing skills by refining one section of a laboratory report at a time.
In this module, you are to write both the Materials & Methods section, as well as the Data & Results section based on the Labster simulation(s) that you have completed.
Materials & Methods: A minimum of one paragraph is required. This section can be presented as complete paragraphs, or bulleted/numbered lists. Remember, the objective of this section is to present protocols in a manner that allows for them to be fully and accurate reproduced by the reader.
Data & Results: As applicable, present data explored with the Labster simulation(s) as tables, figures or graphics. A minimum of one presentation of data is required. Data should be titled and captioned. In addition, the data presented must be introduced in written paragraph form. These written sections are intended to present the data plainly and clearly without analysis.
Credit is assigned based on a combination of content accuracy, professionalism of presentation and demonstrated effort.

After completing the Labster Simulations for this module, review the attached links for additional learning opportunities on stoichiometry.
The objective of this assignment is to discuss real world applications of stoichiometry.
Specifically, students are tasked with choosing a real world application and detailing the value of stoichiometry to this application.
The ideal submission will prepare sample calculations as a demonstration.
This submission should be approximately 1-page, 12-pt font, 1-inch margins.
Grading is based on completeness of objective, alignment with submission specifications, quality of writing, professionalism of presentation, and demonstrated effort.
https://chem.libretexts.org/Bookshelves/General_Chemistry/Book%3A_ChemPRIME_(Moore_et_al.)/03%3A_Using_Chemical_Equations_in_Calculations/3.02%3A_Equations_and_Mass_Relationships/3.2.04%3A_Food-_Let’s_Cook
http://fdchemie.pbworks.com/w/file/fetch/93335894/Stoichiometry_of_Calcium_Medicines.pdf

Please see attached file for the experiment and answer the questions on the last page along with the lab report.

Written Assignment 3: Mass Relationships for Compounds Answer all assigned questions and problems, and show all work. How many atoms are there in 5.10 moles of sulfur (S)? (6 points) How many moles of calcium (Ca) atoms are there in 77.4 g of Ca? (6 points) What is the mass in grams of 1.00 × 1012 lead (Pb) atoms? (8 points) Describe how you would determine the isotopic abundance of an element from its mass spectrum. (6 points) Cinnamic alcohol is used mainly in perfumery, particularly in soaps and cosmetics. Its molecular formula is C9H10O. Calculate the percent composition by mass of C, H, and O in cinnamic alcohol. (8 points) How many molecules of cinnamic alcohol are contained in a sample of mass 0.469 g? (8 points) How many carbon atoms are in 0.469 g of cinnamic alcohol? (8 points) Allicin is the compound responsible for the characteristic smell of garlic. An analysis of the compound gives the following percent composition by mass: C: 44.4 percent; H: 6.21 percent; S: 39.5 percent; O: 9.86 percent. Calculate its empirical formula. What is its molecular formula given that its molar mass is about 486 g? (20 points) Tin(II) fluoride is often added to toothpaste as an ingredient to prevent tooth decay. What mass of fluoride in grams is in 258 g of toothpaste that has 15% tin(II) fluoride? (10 points) What are the empirical formulas of the compounds with the following compositions? (a) 2.1 percent H, 65.3 percent O, 32.6 percent S, (b) 20.2 percent Al, 79.8 percent Cl (20 points)

Solid are rigid because when force is applied, then there is slight vibration occur in solid (no dislocation/displacement) as the particle solid are closely packed and can only oscillate/vibrat around their position