CHEM 142 ZOLLER L_1

21. ADLC Assignment Booklet A3 Decide whether each statement is true (T) or false (F). Place your answer in the blank space given. Scientific theory states that the atoms in today's plastics were parts of microscopic plants and animals that lived in the oceans millions of years ago. b. Molecules of gasoline have more carbon atoms than do molecules of diesel fuel. c. Subjecting large molecules to cracking is useful because smaller molecules are manipulated more easily in a reaction to produce a desired product. d. Unsaturated compounds form during hydrocarbon cracking because too many hydrogen atoms are available for the number of carbon atoms.

OH 1. PBr3/DMSO 2. NaOH/H₂O F 1. pTs-Cl, pyridine 2. KOPh/PhOH F Na metal 2. CH3 Br G

I don't really understand how to read mass spec graphs. I am wondering how to read either one of these graphs.

A. Sentence Completion. Complete each statement with a word/ concept in the blank of the item. 1. is shorthand of expressing the types and the number of atoms present in a substance. 2. The chemical symbol of carbon is 3. There is/are nitrogen atom/s present in this chemical formula NH3. 4. O is the chemical symbol for 5. There is/are hydrogen atom/s in C6H1206.

Predict the chemical formulas of the compounds formed by the following pairs of ions.

M Apple Google Disney ESPN Yahoo! Biomedical Careers Program ☆ For the reaction Fe(s) +2HCl(aq)→→→→→FeCl₂(s) + H₂(g) AH° = -7.4 kJ and AS° = 107.9 J/K B Submit Answer Apple ☆ prod03-cnow-owl.cengagenow.com iCloud Yahoo Images Bing Google Wikipedia Facebook Twitter LinkedIn G b COWLv2... b D2L D2L D2L [Review Topics] [References] Use the References to access important values if needed for this question. D2L The maximum amount of work that could be done when 2.08 moles of Fe(s) react at 286 K, 1 atm is Assume that AH° and AS° are independent of temperature. Retry Entire Group 4 more group attempts remaining The Weather Channel C D2L Yelp TripAdvisor M kJ. +

Select the best answer. 1.) MeMgBr (excess) 2)H*, HO 3.) NaH 4.) CH "R" abbreviation for answers b.) R. R

Carbon Monoxide concentration can be measured by using specialized plastic bag and thru direct reading matter. True or false?

Use the References to access important values if needed for this question You wish to prepare 225 grams of 22.2% (w/w) Mn(CH3COO)2 . Assume that the density of water is 1.00 g/ml. You will need grams of manganese(II) acetate and mL of water. Submit Answer Retry Entire Group 9 more group attempts remaining eq req Preg 2reg Cengage Learning Cengage Technical Support 98°F Rain coming DIL PrtScn Home End Poip ES

Potentially Useful Information Spectrochemical Series: | < Br < SCN¯ < Cl° < NO3¯ < F° < OH° < C2O4²¯ ~ H2O < NCS° < NH3 < en < PPH3 く A student has three test tubes containing a metal (M) nitrate solution M(NO3)2 (aq) (where "M" represents a generic transition metal). The student adds aqueous ammonia (NH3) to one test tube, aqueous hydrochloric acid (HCI) to the second tube, and nothing more to the third tube, but forgets to label the tubes. After this, one test tube contains a red solution, one an orange solution, and one a yellow solution. Note: This metal, M, would follow the same rules that we used for Cu(II), Ni(II), and Co(II). The Jahn-Teller Effect does not apply. Complete each statement or answer each question below about the solutions in the three test tubes. The aqua complex causes less splitting of the d orbitals of the metal than the... ammonia complex. O chloro complex.

-CHEM A054 520 2 X Question 10 - Chapter 9 part 2 X CH6_Chem103 - Kenai Peninsu x + ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launch Chapter 9 part 2 Homework i 10 1 points 8 01:46:48 eBook Hint Print References Mc Graw Hill 7 2 Determine the mass of Na2SO3 necessary to prepare 500.0 mL of a solution that is 0.168 M Na2SO3. g Na2SO3 3 80 00 F3 $ 4 000 000 F4 dº LO % 5 8 DII F8 ( 9 2. F9 (

Assignment/takeCovalentActivity.do?locator=assignment-take Submit Answer $ R F www An aqueous solution of ammonium sulfide, (NH4)2S, contains 0.784 grams of ammonium sulfide and 17.8 grams of water. The percentage by mass of ammonium sulfide in the solution is V 20 % 5 Retry Entire Group 9 more group attempts remaining PA FS T G Cengage Learning Cengage Technical Support B [Review Topics] [References] Use the References to access important values if needed for this question. 6 MacBook Air F6 " Y H & 7 N 44 U J 4 8 M Dil FB 1 * K ( 9 %. VS OWLV2 X DD FO O ) O L command A P ? V Chapter n 334) option x Previous + 1: (1 [ ? 1 OWLV2X + S 1 Next> Relaunch to update Save and Exit } delete

A. Sentence Completion. Complete each statement with a word/ concept in the blank of the item. 1. The chemical symbol of oxygen is 2. There is/are hydrogen atom/s present in this chemical formula C6H1206. 3. is shorthand of expressing the types and the number of atoms present in a substance. 4. C is the chemical symbol for 5. There is/are oxygen atom/s in H2O. B. Identification. Determine the types and number of atoms in the following chemical formulas. 6. BFз 7. С3H8 8. K2CO3 9. CH4 10. CF4

Explain the Schematic of a mass spectrometer ?

ident that you've achieved the learning objectives listed below? If not, please review the background content and the assessments and activities. Competency Review Question 2 Evaluation Time 05:10 Question 2 of 13 2. Compounds can only be separated into their component elements by O breaking chemical bonds O removing impurities breaking element bonds ( Previous Next > • Do not sit idle for an extended period of time, as your session may expire. If you are locked out, you will need to call Science Interactive Customer Service to unlock your progress and your instructor will first be contacted for permission to do so. end HOL - Instance F12 reinteractive.com/hands-on-labs-is-now-science-interactive/) Account (https://myhol.holscience.com/users/152306) Logout (https://myhol.holscience.com/logout) 近

Calculate the moles of KHP titrated in each trial = M x L = 0.5 M x 0.025 L= Calculate the moles of NaOH using stoichiometry of the reaction

The following chemicals will be available in the lab for this experiment: HẸHỘI NH₂ ANH Đ BaCI CaCl₂ FeCly NICI₂ HCI H₂0 K₂ CrO₂ KSCN ANH HEO Give the correct chemical formula for each of the requested chemicals. Enter the subscripts as normal characters. Ex: BaCl2 Be sure to enter any necessary parentheses. Hint: 1. After addition of what chemical will you expect to see iron precipitate from the solution? DMG 2. What chemical will be added to precipitate nickel from the solution? 3. What chemical will be added to selectively precipitate barlum from the solution (leaving the calcium ions in solution)? 4. What color is calcium oxalate? 5. One of the most common mistakes made by students in the lab is not carefully reading the labels on the reagent bottles. In this experiment, students often confuse ammonium carbonate and ammonium oxalate. What is the chemical formula for ammonium carbonate? 6. During the iron confirmation test, what chemical will be added to dissolve the FeCl 7. What…

The missing product from this reaction is -1 t てい 122 53 122 Te A. 52 122 Xe B. 54 121 Te 52 OD. 1 O E. none of these

Tab Window Help Gr ΞΑ ► Dc GTH CICC THE Or Ur 410/viewContent/1121090/View n #1 - 4/6 100% + s A WCIC Co. Li CIC ₁ 13. In a certain chemical reaction, 7.29 g of compound A is added to 5.70 g of compound B. Once the reaction is complete, 3.60 g of compound A and 1.17 g of compound B remain. What mass of products was produced ? 0 14a. Report this ordinary number in scientific notation: 123000 * K FC

X + ce/acellus_engine.html?ClassID=112101524 What is the estimated average atomic mass for this element? A. less than 86 amu C. exactly 88 amu D BI nternational Academy of Science. All Rights Reserved. Relative Abundance 100₁ 50- Unknown Element 81 83 85 87 89 Mass (M/e) B. 87-88 amu D. more than 88 amu Enter

1. On the molecular level, what does it mean for a solid sample to be pure? 2. The computed percent recovery was more than 100%. What does this signify, and what should be done about it?

The mass spectrum below belongs to a compound that contains: Relative Intensity 100- 8 90 20- MS2011-04537CM 0-tbn Chlorine Bromine Fluorine Oxygen 25 50 75 m/z maltempl 100 125

Briefly describe the purpose and importance of the following procedures in the analytical process: a. Sample preparation b. Replicate measurements

4c M Review | Constants | Periodic Part B What is the mass percentage of each element in the compound Al2O3? Enter the percent mass of aluminum and the percent mass of oxygen, respectively, separated by a comma. • View Available Hint(s) ΑΣφ % Al, % O = Request Answer Submit P Pearson I Permissions I Contact Us Privacy Policy ducation Inc. All rights reserved. I Terms of Use 10:34 PM 79% 2/13/2020 Delete Insert PrtSc F12 F11 F10 F9 F8 F7 & Backspace 01 9- 8 +II

ally. * Question Completion Status: QUESTION 1 During the experiment, the mass of original sample of compound was 2.965 g, and the mass of copper obtained was 1.006 g. Based on these numbers, calculate the mass of chlorine in the original sample in grams. Include the unit and three decimal places in your answer. QUESTION 2 6. If 1.045 g of copper was obtained in the experiment, how many moles (mol) of copper is this? Include the unit and five decimal places in your answer. QUESTION 3 During the experiment, a student calculated the mass of chlorine in the compound to be 1.186 g. How many moles (mol) of chlorine are in the Save All Answers Click Save and Submit to save and submit. Click Save All Answers to save all answers. DELL II