Chemistry Homework Help

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Unit Cell

Q. Solid potassium iodide has the same kind of crystal structure as NaCl which is pictured below: How many I^- ions are there per unit cell in solid potassium iodide? How many KI formula units are there per unit cell?

Solved • Apr 6, 2020

Unit Cell

Q. Vanadium crystallizes in a body-centered cubic lattice, and the length of the edge of a unit cell is 305 pm. What is the density of V?

Solved • Feb 19, 2020

Unit Cell

Q. Nickel crystallizes in the face‑centered cubic (FCC) lattice. The density of the metal is 8902 kg/m^3. Calculate the radius of a nickel atom.

Solved • Feb 19, 2020

Unit Cell

Q. Gallium crystallizes in a simple cubic cell. The radius of a gallium atom in the crystal is 1.86 x10^-3 cm. What is the density of gallium? How do I find the density ? When a radius is only given ?

Solved • Feb 8, 2020

Unit Cell

Q. Titanium has a body-centered cubic unit cell. The density of titanium is 4.50 g/cm³. Calculate the atomic radius of titanium. (1 Å = 10⁻¹⁰ m)

Solved • Feb 8, 2020

Unit Cell

Q. A compound by the name of ‘spring yet’ (SpxYty) consists of a ‘spring’ atom at each corner and on each face. There is a ‘yet’ atom along each edge and one in the center. What is the empirical formula for ‘spring yet’? A. SpYt B. Sp2Yt C. SpYt2 D. Sp2Yt3

Solved • Feb 1, 2020

Unit Cell

Q. How many atoms are contained in one unit cell of metallic tungsten if it forms a face-centered cubic unit cell? (I personally thought it would be 2 because a face centered has 2 atoms per unit cell, but thats wrong.)

Solved • Jan 28, 2020