Asubstance can be classified by its physical properties, which are properties that what?

The ammonia molecule in the diagram has the observed bond orientation because

Which description best characterization the motion of particles in a solid

Calculate the molarity of each aqueous solution: a. 78.0 ml of 0.240 m naoh diluted to 0.250 l with water b. 38.5 ml of 1.2 m hno3 diluted to 0.130 l with water