The results of an investigation are usually more reliable if A.
it is done outside.
B.
it is done only once.
C.
it is done using a ruler.
D.
it is done more than once.

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 ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

How many moles in .5g of sodium bromide?