In doing a recrystallization, student A obtains the following data: MP of recrystallized material: 109-111 oC Mixed MP with recrystallized material and student choice of known: 94-104 oC If you were the student, which compound would you pick as the best and mostly likely known to do a mixed MP?

The nuclear fission process releases neutrons and question 27 options: alpha particles electrons energy beta particles

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.