Question 1
The molar heats of sublimation and fusion of iodine are 62.3 kJ/mol and15.3 kJ/mol, respectively. Calculate the molar heat of vaporization of liquid iodine.
◦ –77.6 kJ/mol
◦ –47.0 kJ/mol
◦ 4.07 kJ/mol
◦ 47.0 kJ/mol
◦ 77.6 kJ/mol
Question 2
The most space efficient arrangement of spheres is found in which type of unit cell?
◦ face-centered cubic
◦ body-centered cubic
◦ simple cubic
◦ face-centered cubic and body-centered cubic
◦ body-centered cubic and simple cubic