Calculate the density for zinc (HCP) if the c/a ratio is 1.856 and r- 1.332 A.

2. A 1 L, 100 g (dry weight) sample is removed from a continuous crystallizer which is operated with a residence time of 1000 s. The following particle size distribution is obtained for the sample: i) Size range (um) Mass (g) 200- 300- 400 500 600-700- 800- 300 400 500 600 700 800 900 0- 100- 100 200 2.5 26.0 30.0 21.0 12.0 6.0 2.0 0.5 0.0 Microscopy based on the sieve fractions has found that a volumetric shape correction factor, ky, of 0.52, for the crystal population and the crystal density has been found to be 2000 kg/m³ Determine whether the MSMPR model describes the system. If it does so, then determine the growth and nucleation rates for this system; if it does not, suggest why reasons that may cause deviation of this CSTR type crystallizer from the MSMPR model.

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Q1/ A: Write the mathematical relation for (h 1- Shear stress and strain are proportional to each other. 2- Attractive coulomb interaction between charges of opposite sign. 3- Brinall Hardness number. 4- The Average Atomic Weight. 5- True Strain. 6- Number of vacancies.

State which of the following list of properties is most descriptive of a metallic solid. High melting point, hard, usually soluble in water Malleable, ductile, good conductor of electricity Good conductor of electricity when melted Low melting point, non-conductor, usually insoluble in water None of the above

Compare the thermal conductivities of metals, ceramics and polymers based on structure-property correlations. Explain why thermal conductivities are higher for crystalline materials than for amorphous ones.

For a BCC crystal, which has higher surface energy( 1 0 0 ) or  ( 1 1 0 )? Why?

Calculate the density of BCC iron, which has a lattice parameter of 0.2866 nm.

The aniline point of the given Sample is 65.3. Is the above Sample a good lubricating oil? Explain your answer.