Aluminum metal reacts with hydrochloric acid to produce hydrogen gas. 2 Al (s) + 6 HCl (aq) --> 2 AlCl3 (aq) + 3 H2 (g) If 2.3 L of H2 was collected over water at 25.0 oC and 568.5 mmHg, x grams of aluminum must have reacted with excess hydrochloric acid. What is the value of x? The partial pressure of water at 25.0 oC is 23.8 mmHg.

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.