How many moles are in 22.0 grams of H2O?

Which statement is true about ionic compounds?

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.

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.