11. Chemists can identify the composition of some unknown salts by conducting a flame test.
When potassium salts are heated in a flame, a purple color is observed. This is due
to the
movement of electrons between energy levels. What is the electron configuration
of a
potassium atom at ground state?

gravity causes stares to cluster i think so

rosa was looking for patterns to predict the products of chemical reactions. she recorded three similar decomposition reactions in the table.she should record 2licl + 3o2.

in the last row of the table. it is the thermal decomposition of chlorate lithium, hence, she should record these products as: lithium chloride ( 2licl ) and oxygen ( 3o2 )   2 > 2 licl + 3o2.