Iron titanate, FeTiO3, forms in the ilmenite crystal structure that consists of an HCP arrangement of O2 ions. (a) Which type of interstitial site will the Fe2 ions occupy? Why? (b) Which type of interstitial site will the Ti4 ions occupy? Why? (c) What fraction of the total tetrahedral sites will be occupied? (d) What fraction of the total octahedral sites will be occupied? 1

Emily Ballentine eballen@g.clemson.edu ENGR 1020313 Notes 10/20/17 1 10.2 – Functions in Excel Reminders o Trig functions must be in radians o All functions must be followed by parenthesis Commonly Used Functions o = PI() o = SQRT(__) o Average = AVERAGE(___) Not AVG or AVE o Cosine = COS(___) o Degrees to Radians = RADIANS(___) o Addition = SUM(__) o Maximum = MAX(___) o Median = MEDIAN(___) o Count number of cells with data = COUNT(___) 10.3 – Logic and Conditions Ask yes/no questions and provide conditions = IF(condition, value displayed if condition is tru