There are two atoms of hydrogen and one atom of oxygen in one molecule of water. How many atoms of hydrogen are there in 515151 molecules of water

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

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

Consider this initial-rate data at a certain temperature for the reaction described by