The energy of a photon is 1,000 calories what is the wavelength of the radiation? ( 1 calorie equals 4.184 joules )

What can be the use of smoke transformed into liquid?

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

Which factor is likely to impact the possible number of compounds ?