CHEM 2OB3 Study Guide - Final Guide: Acid Dissociation Constant, To-3, Reaction Intermediate

PRACTICE EXAM BBMB 221 Structures and Reactions in Biochemical Processes Spring 2017 Exam #2, March 7, 2017 INSTRUCTIONS: This examination is worth 100 points. Points for each question are indicated. Write your answers on this test paper in the spaces provided. In the unlikely event that you need extra space, use the back of the page. 1) (8 Points) Select the reagent from the list i-iv that will generate the indicated products, and identify the reactant chemical structures for each reaction. Potential reagents are as follows: ) Oxidizing agent Reducing agent ini)Acid iv) Base H3CS CH2 Reactant Reagent HC-NH,* * HC/ COOH Reagent СООН Reagent Reactant Reactant Reagent

You may use any resource available to you, EXCEPT A CONSULTANT. A deduction of 3/4 of a point will be deducted for significant digits and unit errors. Numeric, multiple choice and true/false answers must be on the line provided, or they will be marked wrong! Written answers should he short; the answer must fit inside the box provided. Answers that do not fit in the box will be penalized 1/4 of the points for the question. You may attach extra pages to show your work. There are 250 points on the exam, it will be graded out of 225 points Cp of corbamite is 0.463 J/g degree C, 135 g of corbamite was healed to 92.3 degree C. The hot corbamite was added to 70.2 g of 15.3 degree C water. What is the final temperature of the system? A natural product with a molecular mass of 617, was analyzed and found to be 48, 47%C. 7.13% H, 28.25% N. What is the empirical [16] and molecular [5] formulae of the natural product? Write a net ionic equation for the following reactions. If there is do net ionic equation write NO REACTION. YOU MUST INCLUDE THE STATES (solid, gas etc). Zn(CIO_4)_4 + 2 (NH_4)_2S rightarrow ZnS_2 + 4 NH_4CIO_4 Ba(NO_3)_2 + RbOH rightarrow Ba(OH)_2 + RbNO_3 3 H_2CrO_4 + 2 AI(OH)_3 Al(OH)_3 rightarrow Al_2 (CrO_4)_3 + 3 H_2O Using a perfect calorimeter, glucose (C_6H_12O_6) 15.6 g was dissolved in 20.00 g of water initially at 29.35 degree C. The final temperature was 26.93 degree C. What is the molar enthalpy of dissolution of glucose? Assume c_p of the solution is the same as water. How much WCI_6 can be made from 125 g of RuO_3 and 825 mL of 4.10 M HCI? RuO_3 + 6 HCI rightarrow RuCI_6 + H_2O

Sprint 7:32 PM @ 41% 1 a loncapa.nau.edu Reagent Matching Match the statement to the correct answer. (Some reagents can be used more than once.) The flowchart along with the report sheets in experiment 5 should be very helpful A OH, CO, and PO4 B Disodium EDTA (NazEDTA) C 0.1M sodium carbonate (Na2CO) D Lead chloride (PbCl2(s)) E 6M Hydrochloric Acid (HCI) F 1M ammonium hydroxide (NH40H) G Zinc Nitrate (Zn(NO3);2 H Silver Nitrate (AgNO3) I Silver chloride (AgCl(s)) J Anion K NH4 (aq) and OH(aq) L Colbalt Nitrate (Co(NO3)2) M Lead Nitrate (0.1M Pb(NO3)s) N Cation O Nar, NO, and NH4 P Aluminum Nitrate (Al(NO3)3) Q 6M Nitric Acid (HNO3》 R Barium Nitrate (Ba(NO3)2) S None of the above This reagent is added to fresh solutions in test B2 where there was no reaction in test B1. Salts containing these ions are often insoluble in water and form precipitates Mixing AgNO, and NaCI will produce what white precipitate In test A2 this reagent added to a fresh sample of solution where there was no reaction in test A1 In test B1 this is the first reagent added to the sample This reagent is added fresh samples in test A3 where there was no reaction in tests A1 or A2 Submt AnseTries 0/99 Threaded View Chronological View Sorting/Filtering options Export? s on what is marked as NEW Mark NEW posts no longer new reagent matching Mohamed Abu Khamiss (mya29:nau) Reply (Wed Oct 25 12:55:40 am 2017 (MST)) NEW it is hard for me to understand what exactly needed from me to answer you over did the multiple choice and the questions are more complicated than the choices it self i answered in many different forms never in my life i stay answering a question for 7 hours and it should be more clarified to the student. NEW Anonymous 2 Reply (Wed Oct 25 01:02:03 pm 2017 (MST)) Try your flow chart It's easier to look back into your lab manual. It's on page 69. Good Luck! Current discussion settings: 1. Display AW posts 2. Not new Once marked not NEW Change? Threaded View Chronological View Sorting/Filtering options Export? Preferences on what is marked as NEW Mark NEW posts no longer new