Nomex, a condensation copolymer used by firefighters because of its flame-resistant properties, forms from isophthalic acid and m-aminoaniline. Draw the structure of the dimer. (Hint: Water is eliminated when the bond between the monomers forms.) H H но HO, Isophthalic acid m-Aminoaniline

Q: hat are three properties of acids and three properties of bases?

A: To give the three properties of both acids and bases.

Q: For pairs of molecules in the gas phase, average H-bond dissociation energies are 17 kJ/mol for NH3,…

A: Bond dissociation energy is directly proportional to the bond strength. The average H-bond…

Q: In this figure, a polar stratospheric cloud (PSC) ice crystal is displayed. Chemical reactions that…

A: To write A and B reactions:

Q: Substance Appearance Melting Point Electrical Conductivity Solubility in Water X lustrous, malleable…

A: Given Substance Appearance Melting Point Electrical Conductivity Solubility in water X…

Q: Which of the following compounds has the lowest boiling point?

A: The boiling point of a compound depends on intermolecular forces present among the molecules of that…

Q: Silane (SIH4), phosphine (PH3), and nitrous oxide (N20) melt at -185°C, -133°C, and -91°C,…

A: To answer this question , we would check the relation between melting point , polar nature and…

Q: Which of the following statements is TRUE? Select one: F2 is more polarizable than Br2. CH3OH has a…

A: Molecule having more size can deform easily. Thus corresponding molecule is polarizable in nature.…

Q: Boron nitride is the second hardest substance known (next to diamond). It has a very high melting…

A: A substance made of boron and nitrogen atoms is called boron nitride (BN). A substance's…

Q: What is the contribution of the labelled S2- ion on the face of the lattice structure to the formula…

A: We have to identify the contribution of marked S2- in the crystal lattice.

Q: A common feature in high-temperature ceramic superconductors is copper (II) oxide (CuO) sheet that…

A:

Q: The ionic compound, CsCl, forms a body centered cubic structure (see below) where the anions occupy…

A: Given : Structure of CsCl is BCC i.e body centered cubic. Density of CsCl = 3.99 g/cm3  And ionic…

Q: Which of these molecules exhibits only the London dispersion forces (LDF) of interactions?…

A: The molecules given are H2O, CO2, SO2, N2O.

Q: Which of the following might be best described by the following set of properties? 1. white solid…

A: The nature of constituent atoms of a molecule, type of bonding between them and charge on atoms…

Q: Some polymers may be strengthened considerably by a mechanism called 'branching'. This mechanism can…

A: This question is related to branching.

Q: How does the sea-of-electrons model explain the high electrical conducitivity of gold ?

A: Metallic bonding is a type of chemical bonding, the cations in the metal are surrounded by many…

Q: Which of the following is a covalent network solid? Ophosphorus brass barium hydroxide carbon…

A: Answer:- This question is answered by using the simple concept of covalent network solid which are…

Q: Which of the following has the highest boiling point? O 0.20 m Na3PO4 O 0.45 m CH3CH2OH O 0.15 m…

A: The elevation in boiling point of any solution is given by  elevation in boiling point = i X Kb X m…

Q: 3. Provide arrow-pushing mechanism for the following transformation. Include any resonance…

A: Given is organic reaction.This is acid catalyzed hydration of alkyne reaction.

Q: List the following in order of decreasing boiling points: CH3I, H2O, N2, and RbCl. Explain your…

A:

Q: The internuclear distance between two closest Kr atoms in solid krypton is about 4.0 Å. The…

A: We have find out boiling point of Krypton.

Q: True or false? SEM can investigate the crystalline structure of an object

A: SEM microscope can be defined as a  microscope that scan the image of an object.

Q: Which of the following forms a molecular solid? O paladio (Pd) O C9H804 OC, grafito O CaCl2

A: There are various type of solid such as ionic solid, molecular solid and covalent solid. Ionic solid…

Q: how much heat (in kJ) is released

A: Given :- CH4(g) + 2O2(g) ---> CO2(g) + 2H2O(g).     ∆H°= -802 kJ/mol  Number of moles of CH4 =…

Q: Shown below are interactions that occur between ions and polar compounds (cyclopentyl alcohol,…

A: We will explain all the interactions that occur between ions and polar compounds (cyclopentyl…