How many moles are in 25.3 g of a sample of potassium nitrate

Idon't see the pic?

Deposition is the transition of matter going from gas to solid without passing through the liquid phase.a.) gas—-> solid

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).