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The smallest repeating unit of a crystal of common salt is a cube (called a unit cell) with an edge length of 0.563 nm.Sodium chloride, NaCl.
(a) What is the volume of this cube in cubic nanometers? In cubic centimeters?
(b) The density of NaCl is 2.17 g/cm3. What is the mass of this smallest repeating unit ("unit cell")?
(c) Each repeating unit is composed of four NaCl units. What is the mass of one NaCl formula unit?
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