When an electron falls to a lower energy level, a is emitted.

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

During trial 2, what allowed you to determine that aluminum was the limiting reactant? check all that apply. all of the copper dissolved. all of the aluminum dissolved. the solution turned clear. the number of grams of copper(ii) chloride used in the reaction was greater than the number of grams of aluminum. the molar ratio of copper(ii) chloride to aluminum was greater than 3: 2, the equation’s molar ratio.

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.