You might be confused to see Cafe 125 listed on your W-2 form. This may sound like it has something to do with where you go on your lunch break, but there is a more reasonable explanation. Cafe 125 stands for IRS regulation code section 125 regarding tax-free cafeteria plans.
The tantalum nitride films consist of a mixture of metallic tantalum, Î²-TaN 0.05, Î³-Ta 2 N and cubic/hexagonal TaN phases, their composition depending on both the ion dose and ion energy. 13. The kinetics of nitridation is characterised by two stages.
Problem #1: The edge length of the unit cell of Ta, is 330.6 pm; the unit cell is body-centered cubic. Tantalum has a density of 16.69 g/cm 3 (a) calculate the mass of a tantalum atom. (b) Calculate the atomic weight of tantalum in g/mol. Problem #2: Chromium crystallizes in a body-centered cubic structure.The unit cell volume is 2.583 x 10Â¯ 23 cm 3. Determine the atomic radius of Cr in pm. Problem #3: Barium has a radius of 224 pm and crystallizes in a body-centered cubic structure.) Calcuate the mass inside the unit cell: 6.95 x 10 -23 cm 3 times 4.253 g/cm 3 = 2.95 x 10 -22 g. Use a ratio and proportion to calculate the atomic mass: 2.95 x 10 -22 g is to two atoms as 'x' is to 6.022 x 10 23 mol -1. x = 88.95 g/mol (or 88.95 amu). Problem #7: Mo crystallizes in a body-centered cubic arrangement.