A clear liquid from a flask is poured into another clear liquid in a beaker. How do you know a new substance was formed

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.

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough