A solid having a mass of 29.558 g was gently dropped into a graduated cylinder containing 41.8 mL of water. As a result, the volume inside the graduated cylinder rose to 47.9 mL. Given this information, calculate the density of this solid (in g/cm3). Give the answer to 3 significant figures.

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

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate