Quiz_07

Number 1-8

How do you estimate what concentrations of electrolyte will be required for a conductivity in the range of 300 - 2000 uS/cm?

Why are there no more than 7 crystal systems ? What are quasicrystals ?

What is the melting point of the substance modeled by this heating curve? F 150 135 120 D E 105 90 75 C 60 45 30A 15 Heat (kJ) Created by E. Lee for Virtual Virginia (2021) Temp. (°C) B

What type of linkage is in the diagram below?   Group of answer choices β1⟶4β1⟶4 α1⟶4α1⟶4 α1⟶6α1⟶6 β1⟶6

what is liquid junction potential ?

7. It is not possible to pack spheres together without leaving some void spaces between the spheres. Packing efficiency is the fraction of space in a crystal that is actually occupied by atoms. Determine the packing efficiency of a face- centered cubic metal as shown in a figure below. 4r- - 45° 8. What determines which species in a solid solution is the solute and which is the solvent? Explain the 24-karat Gold preparation. Au Ag Substitutional alloy 14karat geld Interstitial alloy Sael 9. The unit cell of a binary compound of copper and oxygen is shown here. Given this image and the ionic radii (a) determine the empirical formula of this compound, Cu* = 0.74 Å and ro = 1.26 A (b) determine the coordination numbers of copper and oxygen, (c) estimate the length of the edge of the cubic unit cell, and (d) estimate the density of the compound.

What is band broadening? Explain the phenomenon of eddy diffusion.

Answer number 11