The edge of a body-centered-cubic unit cell (which contains two atoms per unit cell) of an element Y was found to be 3.16 x 10 –8 cm. The density of the metal is 19.35 g•cm –3. What is the approximate molar mass of Y?
a) 65.4 g•mol –1
b) 92.0 g•mol –1
c) 184 g•mol –1
d) 238 g•mol –1
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