Explain the procedures used and data recorded to identify a crystaline mineral baced on its properities

Why does his teacher ask him to balance the equation by including the correct coefficient

Nonpoint source pollution is difficult to control because it

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.