A0.8525 g sample of an unknown acid requires 55.69 ml of 0.1189 m naoh for neutralization to a phenolphthalein end point. there are 1.43 ml of 0.1027 m hcl used for back-titration. how many moles of h+ are there in the solid acid?

What are the 4 phases of matter in order of increasing engery content?

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

Many free radicals combine to form molecules that do not contain any unpaired electrons. the driving force for the radical–radical combination reaction is the formation of a new electron‑pair bond. consider the chemical equation. n(g)+no(g)⟶nno(g) n(g)+no(g)⟶nno(g) write lewis formulas for the reactant and product species in the chemical equation. include nonbonding electrons. n(g)n(g) select draw rings more erase select draw rings more erase select draw rings more erase n no(g)