Two moles of an unknown substance were shown to have a mass of 240g. what molecular mass does the substance have?

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

Geothermal energy for industrial use is available almost anywhere. a.true b.false

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.