Percent purity of fe2o3 in original sample. fe2o3 + 3co - 2fe+3co2. 1.39 x 10^3 kg of fe is obtained from 2.22 x 10^3 kg sample of fe2o3. reaction goes to completion

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.

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?