Desiré was investigating a chemical reaction . When she heated it up , she found that sulfuric acid ( H2SO4 ) changed into water (H20) . She made the following atomic- scale model to show what she thinks happened . Do you think this is a complete model of what happened during the chemical reaction ?

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

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f