_Module One Lesson Four Assignment -

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please solve part a and b explaining why is it that way. show your work on a piece of paper please.

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Dangerous Paint Stripper Jessica has a summer job working for the city parks program. She has been using a cleaner called “Graffiti Gone” to remove graffiti from the bathrooms. She has to take a lot of breaks, because the chemical makes her throat burn. It also makes her feel dizzy sometimes, especially when the bathrooms don’t have very many windows. On the label, she sees that the cleaner has methylene chloride in it. She feels like she’s managing to get the work done, but she is worried about feeling dizzy. She wants to find out more about this chemical, what harm it can cause, and whether there are safer ways to do this work. Questions for following story. 1. What went right in this situation? 2. What went wrong in this situation? 3. What steps should be taken in this workplace to make sure employees are better protected and prepared the next time?

File Edit View History Bookmarks Profiles Tab Window Help N Watch Gilmore Girls | Netflix a Dashboard A ALEKS - Reyna Garcia Psychology Research Sign-Up X * WPAL 101 ė www-awu.aleks.com/alekscgi/x/lsl.exe/1o_u-IgNslkr7j8P3jH-lvdWKW_BBZl6tTytly4Fcfu6zOtOf80MM9smRgOXk4zql8rHN-B4Sv7Er8YkAkkZH6IMU... Spotify Web Playe... M Common Ethical D.. O CHEMICAL REACTIONS Solving moles-to-moles limiting reactant problems Hydrogen (H2) gas and oxygen (02) gas react to form water (H,0) vapor. Suppose you have 1.0 mol of H, and 7.0 mol of O, in a reactor. What would be the limiting reactant? Enter its chemical formula below.

O : Q 8 File Edit View History Bookmarks Profiles Tab Window Help O Psychology Research Sign-Up x WPAL 101 233 Spring 202 ALEKS A ALEKS - Reyna Garcia Watch Gilmore Girls | Netflix A www-awu.aleks.com/alekscgi/x/lsl.exe/1o_u-IgNslkr7j8P3jH-lvdWKW_BBZZ16tTytly4Fcfu6zOtOf8oMM9smRgOXk4zql8rHN-B4Sv7Er8YkAkkZH6IMU... O * G Spotify Web Playe. M Common Ethical D. O CHEMICAL REACTIONS 0/5 Solving moles-to-moles limiting reactant problems Nitrogen dioxide (NO2) gas and liquid water (H,O) react to form aqueous nitric acid (HNO,) and nitrogen monoxide (NO)gas. Suppose you have 2.0 mol of NO, and 5.0 mol of H,O in a reactor. Calculate the largest amount of HNO, that could be produced. Round your answer to the nearest 0.1 mol. | mol Explanation Check OU Rinhts Reserved. Terms of Use I Privacy Center Accessib

Part B The seventh ionization energy of manganese. Express your answer as a chemical equation. Identify all of the phases in your answer. ΑΣφ OA chemical reaction does not occur for this question. Submit Request Answer < Return to Assignment Provide Feedback Ма Word B. amazon U田

Please help me, there are 2 parts attached as 2 screenshots  and double and triple check your answers previous tutors have given me incorrect answers. The previous tutor raised their suspicion that these problems will be graded, I can assure you these are just problems for me to practice NOT for a grade, I just wanted to see if i get the right answer.

Lewis structures of group T compounds Draw Lewis structures for each of the following molecule or ion: • Methane, CH4 Ammonia, NH3 Water, H20 • Borane, BH3 • Sulfur dioxide, SO2 Carbon dioxide, CO2 Upload an image of your drawn structures, include the number of valence electrons and the number of pairs of electrons for each. Browse your files to upload or Drag and Drop Max attachments: 2| Max Size: 20.00MB each Complete the following table. Only consider the 'central' atom when filling in the steric #, # of bonding electron groups and # of lone pairs.

sure your internet connection is working well. Interrupted service can be used as a reason for a retake, only have one attempt. There are no retakes. ot click the "Back" button on your web browser it will kick you out of the exam. e: Make sure to answer all questions. If you close the exam early with answering all questions in your exam. wers that you answered will count as your completed exam and all questions not answered will be marked Question 1 Which of the following best explains why soap and water remove grease? O Soap molecules are large polymers that absorb grease O Soap molecules are ionic and attracted to grease Soap molecules are nonpolar and dissolve in grease O Soap molecules have ionic "heads" that dissolve in water and nonpolar "tails" that dissolve in water O Soap molecules have ionic "heads" that dissolve in grease and nonpolar "tails" that dissolve in water. Quiz saved at 6:52p ch O O

How would you do part C, please show all your work on a piece of paper and explain why is like that.

Please help me, there are 2 parts attached as 2 screenshots  and double and triple check your answers previous tutors have given me incorrect answers. The previous tutor raised their suspicion that these problems will be graded, I can assure you these are just problems for me to practice NOT for a grade, I just wanted to see if i get the right answer.

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I don't  know what Me is they need to give me credit for the wrong answer ty please draw complete

0 of 1 point Help me answer this Trylt.Ch_3.L03.Q1 (algorithmic) Christina's goal is to have $22,000 in her account in 10 years. Her account pays 5% interest compounded annually. About how much does she have to invest in her account today to reach her goal? Unlimited tries The amount she will need to invest today is $ Type. (Round to the nearest dollar.)

Exercise E1C.3(b) (MAKE SURE TO EXPLAIN YOUR REASONING FOR WHETHERREPULSIVE OR ATTRACTIVE FORCES ARE DOMINATING). please typing in clear font or computer

You were asked to watch a video where a small amount of water was placed into a can on a hot plate. After time, it was inverted into ice water. Why did the can implode? Edit View Insert Format Tools Table 12pt v Paragraph v |BIUAv D2

Bookmarks People Tab Window Help Chrome File Edit View History 9 GroupMe A ALEKS - Jacqueline Hoppe Mcc Topic: Chapter 9 Discussion: P x A www-awn.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNsIkr7j8P3jH-IQiHqRdYV_6Ux63SypJXz0Coxv Que E Objective Knowledge Check A student sets up the following equation to solve a problem in solution stoichiometry. (The ? stands for a number the student is going to calculate.) Enter the units of the student's answer. 1 mL (0.32 L) g 1.20 mL -3 10 g 96.29 mol

Chrome File Edit View History Bookmarks Profiles Tab Window Help Watch Gilmore Girls | Netflix dt8827@uncw.edu - Yahoo Ma x A ALEKS A ALEKS - David Teague - Learn x O Psychology Res A www-awu.aleks.com/alekscgi/x/lsl.exe/1o_u-IgNslkr7j8P3jH-IvdWKW_BBZZI6tTytly4Fcfu6zOtOf80MM9s7fhro96M9yNOr003mlfCwgzROGh... Û ☆ Spotify Web Playe... M Common Ethical D. O ELECTRONIC STRUCTURE AND CHEMICAL BONDING 0/5 Interconverting the wavelength and frequency of... Suppose a popular FM radio station broadcasts radio waves with a frequency of 89. MHz. Calculate the wavelength of these radio waves. Be sure your answer has the correct number of significant digits. Om II

tes.You will be notified when time expires, and you may continue or submit. Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain. Multiple Atternpts Not allowed. This test can only be taken once. Force Completion Once started, this test must be completed in one sitting. Do not leave the test before clicking Save and Submit. Remaining Time: 34 minutes, 54 seconds. Question Completion Status: A Moving to another question will save this response. Question 11 The following question pertain to the charting of NMR spectra. MATCH the correct term to the description below. The exact place on the chart at which a nucleus absorbs (i.e. where the peaks are located) is called its high-field or upfield side delta (6) Chemical shift МHZ TMS A Moving to another question will save this response. MacBook Air II F8 000 O00 F9 F7 F6 F5 F4 F3 F2 & $ % # 8 7 6 5 tA4 OOO

Tab Window Help View History Bookmarks Profiles Chrome File Edit A ALEKS - Iffat Khan - Learn St. John's University - My Appl x A www-awn.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-lijkPWvZoZLqKt1FLlq7wcPWKzBYGfE9IMFjfv2X= O SIMPLE REACTIONS Identifying precipitation, combustion and acid-base reactions Classify each chemical reaction: type of reaction (check all that apply) reaction O precipitation O combustion O combination кон (аq) + нсIо, (аq) - ксіо, (аg) + н, о() O single replacement O double replacement O acid-base decomposition O combination O precipitation O single replacement O double replacement O decomposition O combustion Feso, (aq) + PbCL, (aq) → FeCl, (aq) + PbSO,(s) O acid-base O combination O precipitation 2K (s) + Br, (1) → 2K Br(s) O single replacement O combustion double replacement O acid-base O decomposition O combination O precipitation Baco, (s) Ba0(s) + Co, (g) O single replacement O combustion O double replacement O acid-base decomposition Explanation…

PHOTOSYNTHETIC PIGMENTS 1.6 0.7 1.4 Qy CH 0.6 1.2 Soret 0.5 1 H 0.4 0.8 0.3 COOCH 0.6 phytyl bacteriochlorophyll a 0.2 0.4 Qx 0.1 0.2 300 400 500 600 700 800 700 750 800 850 900 2 (nm) 2 (nm) Figure 4.7 Absorption (left) and fluorescence (right) spectra of bacteriochlorophyll a in diethyl ether 5. Look at this figure from Blankenship's book, Molecular Mechanisms of Photosynthesis. You can see the structure for bacteriochlorophyll a, along with its absorption spectrum. a. What is the molecular shape around the labeled carbon atom? b. What is the hybridization around that same carbon? c. Based on this structure, would you expect this molecule to absorb light in the visible spectrum? Why or why not? Absorbance Fluorescence (Arbitrary units)

5. Use the MS data to answer the questions on the next page. 14.0 1.4 15.0 8.1 100- MS-IW-5644 26.0 2.8 27.0 6.7 28.0 1.8 29.0 80 4.4 38.0 1.0 39.0 1.5 41.0 1.2 42.0 11.2 43.0 100.0 44.0 4.3 79.0 1.9 80.0 2.6 Relative Intensity 40 81.0 1.9 82.0 2.5 93.0 8.7 20- 95.0 8.2 121.0 2.0 123.0 2.0 136.0 11.8 0 138.0 11.5 20 40 8. 60 a. Br - 0 80 100 120 140 160 180 200 220 m/z Identify the m/z of the base peak and molecular ion. 2 b. Draw structures for each of the following fragments (include electrons and charges): 43.0, 93.0, 95.0, 136.0, and 138.0 m/z. C. Draw a reasonable a-fragmentation mechanism for the fragmentation of the molecular ion to fragment 43.0 m/z. Be sure to include all electrons and formal charges. 6. Using the values provided in Appendix E of your lab manual, calculate the monoisotopic mass for the pyridinium ion (CsH6N) and show your work.

Can you give me a detailed step by step process of how to do this please, thank you !

What is the reason for the stoke shift for a fluorophore ? Please shortly answer at your own words. Answer should be to the point(specific 4-5 lines).