hydrogen can be made by reacting methane with steam CH4+H2O—>3H2+CO. Calculate the mass of hydrogen that can be made by reacting 64g of methane with excess steam.

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 boiling point of liquids is very high what does it indicate

What happens to the atomic radius when an elctron is lost