Assume a substance X has a body centered cubic lattice. The edge length is 379.0 pm. The atomic mass of X is 195.0 amu What is the density of Xin g/cc

Explanation:

From the question we are told that:

Length

Atomic mass of X

Where

Let

The Number of units in BCC unit cell

Generally the equation for Density is mathematically given by

Therefore he density of Xin g/cc

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).