Knowing that the density of Tungsten is 19.3 g/cm3 , its lattice parameter is 0.316 nm and its molecular weight is 183.84 g/mol, and assuming a cubic structure: a. How many atoms per unit cell does tungsten have (rounded to the nearest integer)?
b. What is the crystal structure of tungsten? Explain.

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?

Which aqueous solution of ki freezes at the lowest temperature? 1) 1 mol of ki in 500. g of water 2) 2 mol of ki in 500. g of water 3) 1 mol of ki in 1000. g of water 4) 2 mol of ki in 1000. g of water

What does a numerical subscript following an element in a chemical formula mean?