What word or two-word phrase best describes the shape of the phosgene ( COCI, ) molecule?

Write the balanced Ka and Kb reactions for HSO3 - in water. Include physical states for each species.

How do the physical properties of a network covalent solidand a molecular covalent solid differ? Why?

11.1047 Fluorine often reacts explosively. What does this fact suggest about fluorine reactions at the molecular level?

7.72 How does an MSN differ from amorphous silica so that is has improved biocompatibility?

1. Compute percent ionic character of gallium phosphide (GaP) given electronegativity for Ga is 1.6 and that for P is 2.1. 2. What type(s) of bonding would be expected for the following materials: (a) brass, (b) rubber, (c) solid xenon, (d) aluminum sulfide, and (e) nylon.   3. Given that atomic radius is 0.143 nm and crystal structure FCC, calculate the theoretical density of aluminum.

122 CHAPTER 5ID 15. Which of the following best describes the particle-level bonding in a crystal of KBr? iupil doiw (A) alternating positive and negative metal ions in a crystal lattice framework. (B) positive and negative ions in fixed position in a crystal lattice framework. (C) mobile valence electrons shared between positive metal ions. (D) metallic and nonmetallic atoms covalently bonded in a 3-dimenional framework. () HO (C) CC (D) CH'OE Questions 16-17 use the following information. 6801 9010 oloegsini doidW8 H H H---H H H Ethane wolod a (B) но-с-Сн, — СH, — СH, — СH, ннн нннн H-C-C- C-C-C-C-C-H || | | I|| Η Η Η Η | H. нн Heptane Pentanoic Acid 10 Name Chemical Formula Molar Mass (g/mole) Boiling Point (°C) Ethane 30.07 -88.5 Heptane 16 100.20 98.1-98.7 Pentanoic Acid 102.13 186-187 16. Heptane and pentanoic acid have very similar molar masses, but pentanoic acid has a significantly higher boiling point. Which of the following statements best helps explain this observation? (A)…

25. Write reasonable mechanisms for each of the following transformations.

2. Write the equation for the dissociation of the following ionic compounds. Include phase labels. (a) SrBr2 (b) (NH);SO4 416

What is the molecular shape of SN2?