Ahypothetical metal crystallizes with the face-centered cubic unit cell. the radius of the metal atom is 234 picometers and its molar mass is 195.08 g/mol. calculate the density of the metal in g/cm3.

Explanation:

As can be seen in the Figure in a face-centered cubic unit cell you have:

In total:

Now, each side of the cell is 234 picometers (2.34e-8 cm) long

Atoms per cm3:

Expressing in mass:

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :