What size container do you need to hold 0.0459 mol of n2 gas at stp

What element breaks down into yttrium-90?

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

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.