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- #32 multiple choise part a) aelects Which of the followina is incorract? DHC,H;0,,acatic acid 2) HBr, brom jc acid 3) H,5031 Sulfurous acid 4) HCIO3)chloric aid part b) Which moleculas do hot obay the ctet sule? I BF II CHBr3 III Br V Co VI SFu parte) Which of the follow exhibits resonance? A) NH3 BIPCI3 D) NO,What volume of concentrated ammonia should be used to prepare 200 ml of 0.600 M solution?Purity 28% w/wdensity 0.9 g/mlProvide clear explanation and answers
- A student dissolved 4 drops of an unknown compound in 1 mL of methylene chloride (dichloromethane) in a test tube. They added 5 drops of a 2% solution of bromine in dichloromethane dropwise and mixed the contents within the test tube gently. They observed the red-brown color discharges (turns colorless) until the last drop. What compound is most likely the unknown? ©GMU 2020 Oa. Methanol b. Cyclohexane c. n-Butyl Bromide O d. Hex-2-ene COLE QUESTION 6 A student placed 2 drops of an unknown sample in a test tube and added 2 mL of ethanol to the test tube while mixing gently. They added 2 drops of potassium permanganate reagent to the test tube and mixed the contents of the test tube gently. The initial color was a deep purple but then changed to a yellow color which precipitates as a brown solid. What compound is most likely the unknown? OGMU 2020 a. Cyclopentane O b. Cyclohexene c. 1-Pentyl Chloride d. 2-Propanol SOUL QUESTION 7 A student performed the Beilstein test within a chemical…¿Cuál es el porcentaje en volumen cuando preparamos 25 ml de ácido nítrico en 800ml de la solución?nohesup och towana no bas moldog sniwallot om besl odi sisluola) (1) obrolde (II)noni y 12 Tamisanos noituloa zucoups Jm-0.28 nA noituloz od to vinelom fatuloz or lo 22ant orb 21 JW 2 Solution 1 2 3 4 Part 1 Data related to aqueous solutions of sodium chloride (NaCl) and aqueous solutions of ethanol (C₂H5OH) are provided in the table below. Use the table to answer the following questions. Circle the letter of the choice that best answers the question. NaCl 3.0 3.0 3.0 3.0 Mass (g) H₂O 100.0 200.0 300.0 400.0 Solution 5 6 7 8 Snoitulor odi to smudov odi 21 IndW 2. Which of the following solutions is the most dilute? a. Solution 1 b. Solution 2 Volume (mL) C₂H5OH 2.0 5.0 9.0 15.0 c. Solution 3 H₂O 100.0 100.0 100.0 100.0 d. Solution 4