Is it okay if you help me? I'm kind of in a tight spot here. Tysm o(❁´◡`❁)o!!

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

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?