Question

11-15

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L Wht typef c ds e Xa hve &Trigal pyid r wiga plana 4T-haped None of the bove 12. Nitoge reacts with bydrog to gve ammonia gas olar mass17 gmol) acconding to the llowing actio No 3 2N alnced How many grams of amonis are produced from9.75of hydoge gs (olar mass-2 gimol), if the reaction has a yield of 50% 1.70 b.19.1g 2.13 4.3.40 g e None of the above 13. Which of the following molecules does not have a dipole moment? a. HCI b. O c. NC d. SeO e. None of the above 14. The molar mass of an insecticide, dibromoethane, is 187.9. Its molecular formula is CzHBr. What percent by mass of bromine does dibromoethane contain? 99 6e52 a. 37.8% b. 42.5% c. 50.0% d. 85.0 % e. 89.3% 15. A system undergoes a process consisting of the following two steps: Step 1: The system absorbs 60 J of heat while 30 J of work is done on it. Step 2: The system liberates 30 J of heat while performing 60 J of work. Calculate AE for the overall process. a.-60 J b. -90 J c. 90 J d 60 J e. None of the above

Answer 1

VI Xe 3+ You Ace to formula of Hybridisation : H= 1 [valence e- of + No. of [ Valence e- of , { No. of Morovaleut _chade of cation - Central atom Attached 2 midal H= +[8+3–1] = 10 = 5 spad So it's Geometoy will be Triagonal Pysok But we asbed Shabe-> which don't count Love Pair xe_f . .. it's shape is T-shaped 012 N2 CPJ + 3H2 (8) ~ 2NH3 CgJ - 28 gm. 6gm : 34 gm. - If we feast 69 of He then we get 349 of NH3 But given that yield is 50% E og of H2 react to give only 179 of Nag 0.759 ---- - = 17 x 0.75 => 2:13]

no 013 Dipole moment (u) = ? (charge) xd (disbal a) HC > St have dipole moment → have some dibole momento OCOⓇ Daños + dihet moment + dibole momentu S di pole moment of D and Will get resultant Just opposite to © Hence cancel out each Other No dibole moment?
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