Consider the perbromateanion. what is the central atom? enter its chemical symbol. how many lone pairs are around the central atom? what is the ideal angle between the bromine-oxygen bonds? compared to the ideal angle, you would expect the actual angle between the bromine-oxygen bonds to be

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.

Word equation for k(s) +h2o(l) yield koh (aq) + h2

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1: