Virtual Lab – Chemical Equations

Virtual Lab – Chemical Equations

Start the lab by  clicking this link .

 

Login using the provided username. This should bring you to the virtual lab interface. Watch the introduction video and read the directions on the screen.

Record all of your answers in the journal while conducting the entire lab (including the analysis section). DO NOT FORGET TO SAVE YOUR JOURNAL ENTRIES. Upload your saved journal entries here for your grade. 

 

 

Law of Conservation of Matter This law states that matter cannot be created or destroyed. This means that during a chemical reaction there are the same number of atoms before and after. However, not all molecules react in a one to one ratio.  Mg  +  O2  →  MgO  Because oxygen is a diatomic molecule (O 2) in a one to one ratio, there is an oxygen atom left over that must be used. If we add another atom of magnesium it can bond with that leftover oxygen to produce two molecules of MgO.  2Mg  +  O2   →  2MgO  This equation is now balanced, meaning that it shows the correct ratio so that there are the same number of atoms before and after the reaction.   When balancing a chemical equation you may NOT change any chemical formulas or add any subscripts.  Steps to Balancing Equations:Count the number of each type of atom on each side of the arrow. If a polyatomic ion is on both sides of the reaction, you may count it as one ion. Add coefficients in front of chemical formulas in order to balance the equation. Balance hydrogen and oxygen (if present) last.  
Make sure your have the lowest ratio possible when done. (Reduce all coefficients if possible.)
 
Watch the video below to watch me work through these two examples, plus 1 more. You might want to pause the video at times so that you can practice and check your work.
 

 Example 1: Balance the following equation.  ___CH4  +  ___O2   →  ___CO2  +  ___H2O               C – 1                                   C – 1               H – 4                                   H – 2                                  O – 2                                   O – 3  (2 + 1)  We can see that our carbons are balanced, but our hydrogen and oxygen atoms are both unbalanced. We may only add coefficients in the underlined spaces. In order to make there be 4 hydrogen on the right side of the equation we should add a 2 in front of H 2O.  ___CH4  +  ___O2   →  ___CO2  +  _2 _H2O
               C – 1                                  C – 1                H – 4                                  H –  2                                   O – 2                                  O –  3  4  This coefficient balances our hydrogen atoms. It also changes how many oxygen atoms we have on the right side of our equation, so we change our count. Now in order to balance our oxygen atoms we should put a 2 in front of the O 2.  ___CH4  +  _2 _O2   →  ___CO2  +  _2 _H2O
              C – 1                                  C – 1               H – 4                                  H –  2  4               O –  2  4                               O –  3  4  Our equation is now balanced!  Balancing is a process of trial and error and you will only get better at it with practice. Also, there are sometimes many paths to the same correct answer. If you find yourself going in circles while balancing a problem, start fresh and don’t get discouraged.       Example 2:  Balance the following equation. ___K3PO4  +  ___HCl  →  ___KCl  +  ___H3PO4
                    K – 3                              K – 1               PO 4 – 1                       PO 4 – 1       We can count this as ONE item because PO4 stays together.
                   H – 1                           H – 3                   Cl – 1                           Cl – 1  We can see that the K and H are not balanced. We can balance the potassium by putting a 3 in front of KCl.  ___K3PO4  +  ___HCl  →  _3 _KCl  +  ___H3PO4
                    K – 3                              K –  1  3
              PO 4 – 1                       PO 4 – 1                          H – 1                           H – 3                   Cl – 1                           Cl –  1  3  Now we can balance our hydrogen by placing a 3 in front of HCl.  ___K3PO4  +  _3 _HCl  →  _3 _KCl  +  ___H3PO4
                    K – 3                              K –  1  3
              PO 4  – 1                           PO 4 – 1                           H –  1  3                        H – 3                   Cl –  1   3                       Cl –  1  3  Now our equation is balanced!  

 Click  HERE  for some more balancing practice. This is not for a grade but will help you gain confidence in your balancing skills!

 

Acct. 212 Individual Learning

Name_Smith______________________________

 

 

Individual Learning 55 Question Form

 

General Information

1.            What is the name of your corporation?

2.            Where are the corporate headquarters?

3.            What is the corporation’s fiscal year end?

4.            What are the primary products or services of the corporation?

5.            Graph the high and low price of the company’s stock for each quarter of the last two years. What was the high and what was the low?

6.            Who is the company’s transfer agent and where are they located?

7.            Who are your company’s competitors?

 

Market Information :

8.            On which stock exchange is your corporation’s stock traded?

9.            What is the current market price of their stock?

10.        What is the ticker symbol used to identify your corporation on the stock exchange?

 

Internet Information :

11.        What is the Internet address of your corporation? Be sure it appears as a hyperlink.

12.        Is the corporation’s Annual Report online?

13.        Are its financial statements on-line?

14.        Is your company listed on Annualreports.com?

15.        How long is your company’s 10-K report at the Securities and Exchange Commission website (Edgar Database)?

 

Cash Flow and Retained Earnings :

16.        List the amount of cash flows from each of the 3 activities: Operating, Investing, and Financing for the 2 most recent years. What was the increase or decrease in cash for each of these years?

17.        Were there any Non-Cash Investing/Financing Transactions? Describe the type and amount.

18.        What is the dollar difference between accrual net income and Cash provided by Operations?

19.        What investing activity provided the largest inflow of cash in the current year?

20.        What investing activity used the largest amount of cash in the current year?

21.        What financing activity provided the largest inflow of cash in the current year?

22.        What financing activity used the largest amount of cash in the current year?

23.        Does the company have sufficient cash inflows from the appropriate category?  Describe any problems the company many experience with cash flow from your analysis of the cash flow statement.

24.        Show the change in Retained Earnings for the 2 most recent years. What was net income for each year? How much was paid out in dividends each year?

25.        Were the dividends on common stock and/or preferred stock? What was the amount of each?

26.        Did Retained Earnings change for any reasons other than net income or dividends? Explain.

27.        What classes of stock does your company have?

28.        How many shares of each class of stock are authorized, how many are issued, and how many are outstanding?

29.        Does your company have any treasury stock? How many shares and what dollar amount?

30.        What is the par or stated value of each of your company’s stocks?

 

Footnote Disclosures :

31.        How many footnote disclosures does your company have?

32.        How many significant accounting policies are listed under its Summary of Significant Accounting Policies?

33.        What does it include as Cash and Cash Equivalents?

34.        What method does it use to value Inventory?

35.        What method(s) does it use to depreciate its assets?

36.        Does it have any leased assets? If yes, describe them.

37.        What policies does it have in regard to Foreign Currency Translations?

38.        Describe any pending lawsuits in which it is involved.

39.        Provide its Earnings per Share for the 2 most recent years?

 

Report of the Independent Auditor(s) :

40.        Who is/are your company’s auditor(s)?

41.        Where are they located?

42.        Does the auditor(s) give a qualified opinion, an unqualified opinion, a disclaimer of opinion, or an adverse opinion? What does that opinion mean? Is it good?

43.        What is the auditor’s responsibility in regard to the financial statements?

44.        What is management’s responsibility in regard to the financial statements?

45.        What financial statements were included in the auditor’s opinion?

46.        Did the auditor believe that the statements were presented fairly?

 

Management’s Report :

47.        Who bears the responsibility for the integrity and the objectivity of the financial statements?

48.        What does management say they are doing to assure the public that the financial information is reliable?

49.        What is the responsibility of the Audit Committee of the Board of Directors?

 

Analysis : (use Excel to complete this section)

50.        Provide common-size analysis of your company’s income statement and balance sheet for the 2 most recent years (must be done using Excel with formulas).

51.        Provide horizontal analysis of your company’s income statement and balance sheet, showing the dollar amount and percent of change using the 2 most recent years (you must use an Excel spreadsheet with formulas).

52.        Perform ratio analysis on your company using the ratios listed on page 705 of your text (these must be in an Excel spreadsheet, using formulas to calculate the ratios). You should present them in a similar format as the text: group by category, list name of ratio, formula in words, and the ratio calculation. Give a short explanation of your conclusions about your company after each category of ratios (i.e. How liquid is your company? How efficiently is it using its assets? etc.).

 

Conclusions :

53.        Are you optimistic or pessimistic regarding the future of your chosen corporation? Explain.

54.        Would you invest in the stock of the company? Explain.

55.        Would you invest in the bonds of the company? Explain.

Going green

TopicessayTypeEssayLevelUniversityStyleAPASources LanguageEnglish(U.S.)Descriptiondescribe how “going  green ” has become a culture in the US and at universities across the country. Include how would you improve sustainability. lastly. how current and future “going  green ” changes will affect the community and the world around us The fist part is so clear and not complicated The second part is from your perspective , so it is just an opinion with no facts please I need it as good as you canSpacingDoublePages2

ASAP

Goal

This week you will draft another section your mock research proposal, the current background.

Remember, posting early in the week can provide time for your instructor and student colleagues to provide feedback that you can use to refine your work before you submit it for an assignment grade.

Get Write Directions

Post your initial draft by the end of the day on Sunday and provide feedback to at least one student colleague by the end of the academic week (Tuesday by 11:59 PM). Your initial post must include APA formatted citations in the body of the post and full references at the bottom of the post to acknowledge the source(s) of your information so you can practice APA formatting.

Refer to the Get Write rubric in the course Syllabus for more specific information about requirements and grading standards.

Get Write Topic

This week the first few sections of your mock research proposal are due. Hopefully the feedback on the research problem section last week was helpful.

By Sunday this week provide a draft of your current background section. In Unit 3 you identified and critiqued the credibility of various background sources related to your research problem. In the current background section, you will summarize appropriate credible references in your own words (with appropriate citations in the body of the text) to provide a coherent picture of what is currently known about the research problem that could contribute to identifying a solution to the problem. You will not include the analysis of the reference; just the summary is needed.

For example, if you are doing a paper about obesity, you could summarize diets and exercise programs that have previously helped people lose weight. You may have also found information that suggested that one specific ethnic group has a higher rate of obesity and the cultural habits that might contribute to the high rate. If you are focusing on a specific disease you may have found suggested causes of the disease and potential ways to intervene to prevent the disease or relieve symptoms. Or you may have found life style changes to help reduce symptoms or cure the disease. The focus of the current background section is on potential solutions to your research problem that might ultimately lead to a specific hypothesis.

However, if you have a new research problem, you might not find anything that suggests a cause or solution that could be tested. You would summarize the limited information you found and identify the gaps in information that you could use to develop a refined research question.

Based on what you summarize, analyze whether or not you believe you can develop a hypothesis.

Finally identify your hypothesis or if there is no solution suggested by the current information, state a refined research question. Remember that a hypothesis is a statement that suggests a way to overcome the problem. A refined research question is best stated as a question, although that is not mandatory.

In your post, include:

Your research problem

1-4 paragraphs summarizing various references related to potential solution for the research problem

Analysis of whether or not you believe there is sufficient information to create a hypothesis

Your hypothesis or refined research question

Properties of Matter Lab

Download and print this handout. While an adult supervises, complete the experiment by following the procedure given. Answer all questions and submit your completed lab report under Properties of Matter Lab Assignment. Please note that the observations are part of your grade and must be included in your lab report.