Solve the following questions and write the solution method:

1)A specimen of UHDPE has M.W. = 3.75x10 gm/mol, determine n (the degree of polymerization)

a) 118110 b) 126718 c) 133929 d) 152611

2)Determine the wavelength of a photon when an electron transmits from shell number 6 to shell number 3 in Ag atom (Z = 47)

a) 2.11 A b) 4.95 A c) 7.82 A d) 9.41 A

3)For the vector [110] in BCC crystal structure, determine its LD (linear density)

a) 0.3/R b) 0.5/R c) 0.7/R d) 0.9/R

4)The theoretical density of platinum (A = 195.08 g/mol, R = 0.139 nm, FCC) in g/cm is

a) 13.69 b) 19.11 C) 21.32 d) 29.43

5)A polycrystalline material has 16.5 grains/in at 300x, calculate n (the ASTM grain size number)

a) 4.3 b) 6.8 C) 8.2 d) 9.5

6)For a simple cubic structure, compute LD [555]

a) 1/5R b) 3 2 c)2/3R d)1/23R

7)For an HCP crystal structure, determine PD (1/2)

A) 0.289/R b)0.516/R C)0.732/ R d) 0.884/ R