I need the answer as soon as possible 1) a- Draw a projection onto (a b) and (a c) plane of NiAs structure.b- Calculate the density of NIAS.c- Calculate the shortest Ni-As, As-As, and Ni-Ni distances. (Use: m(Ni) = 58.69g/mol; m(As) =74.92 g/mol; Avogadro constant: NA= 6.023 x 1O23 mol-1, a = b= 3.57 Åand c = 5.10 Å).I need help for part c?

Answered: 1) a- Draw a projection onto (a b) and…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter6: Covalent Bonding

Section: Chapter Questions

Problem 6.ACP

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Use the following set of assumptions to estimate the CN bond length in fulminic acid: 1) only the two best structures contribute to the true structure 2) the best structure contributes 75%, 3) the CN single bond is 1.47 pm, the double is 1.32 pm and the triple is L.16 pm. Enter your answer with 2 significant figures as a number with no units. Structure I Structure II Structure III H-C=N=0 H-C=N-0 ŌI H-C-N=01 VFullsc 10:41 PM
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Q3- For the following elements: a) Mg, with Z=12 b) S, with Z=16 1-write electronic configuration 2-determine number of electrons in valance band 3- determine whether element is electropositive or electronegative element.
[References] Hydrogen cyanide, HCN, is prepared from ammonia, air, and natural gas (CH4) by the following process: 2NH3 (g) + 30, (g) + 2CH, (g) → 2HCN(g) + 6H, 0(g) Hydrogen cyanide is used to prepare sodium cyanide, which is used in part to obtain gold from gold-containing rock. If a reaction vessel contains 6.10 g NH3, 13.0 g 02, and 5.83 g CH4, what is the maximum mass in grams of hydrogen cyanide that could be made, assuming the reaction goes to completion as written? Mass g HCN Submit Answer Try Another Version 3 item attempts remaining (Previous Next Save and Exit
(a) Complete the Lewis structure for the molecule below. How many lone pairs are there? HHH H-Ca Cb C-N=C=S H (b) For the structure shown, give the hybridizations of the following atoms: (i) Ca (i) Ca-Cb-C (ii) Cb (iii) N (ii) H-Ca-C b (c) Give approximate values of the bond angles for the following: (iv) S (iii) C-N-C
3 (a) Explain why BrF4 is square planar, whereas BF is tetrahe dral. (b) How would you expect the H-X-H bond angle to vary in the series H20, H2S, H2SE? Explain. (Hint: The size of an electron pair domain depends in part on the electronega- tivity of the central atom.) (30
Each of the following properties shows a regular trend inGroup 1A(1). Predict whether each increases or decreases upthegroup: (a) melting point; (b) E−E bond length; (c) hardness; (d) molar volume; (e) lattice energy of EBr.
a) Explain the chemical bonding between Nitrogen(1N) and Chlorine(3CI) using Lewis electron dot structure. b)Answer the following for the structure given below. on H3C H. b(i) no of bond pair electrons b(i) no of lone pair electrons b(iii) no of single bond b(iv) no of double bond
Energy is required to remove two electrons from Ca to formCa2+, and energy is required to add two electrons to O toform O2 - . Yet CaO is stable relative to the free elements.Which statement is the best explanation? (a) The latticeenergy of CaO is large enough to overcome these processes.(b) CaO is a covalent compound, and these processes areirrelevant. (c) CaO has a higher molar mass than either Ca orO. (d) The enthalpy of formation of CaO is small. (e) CaO isstable to atmospheric conditions.
Use the following data to estimate AH; for potassium bromide. K(s) + Br2 (9) - KBr(a) Lattice energy -671 kJ/mol Ionization energy for K 419 kJ/mol Electron affinity of Br -325 kJ/mol Bond energy of Br2 Enthalpy of sublimation for K 193 kJ/mol 90. kJ/mol AH = kJ/mol
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3. The number of Bravais lattices are. (a) 7. (b) 14 (c) 10

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