Acubic piece of metal measures 2.50 cm on each edge. if the metal is nickel, whose density is 8.90 g/cm3, what is the mass of the cube?

express your answer using three significant figures.

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

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.

Will mark brainliest how many electrons can be held in the energy level n = 4?