Which of the following is a characteristic of a mixture?
a. it has varying properties.
b. it has a fixed composition
c. it contains only pure substances
d. it has both varying properties and a fixed composition

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

How many atoms are there in 5.70 mol of mg

What is the mass of 0.46 mol of mgcl2