How many moles of magnesium chloride are produced when 4.39 moles of magnesium are placed in a beaker containing only 250.0 grams of hydrochloric acid?

Explanation:

Hello!

In this case, since the reaction between magnesium and hydrochloric acid is:

Whereas there is a 1:1 and 1:2 mole ratio between magnesium and magnesium chloride and hydrochloric acid and magnesium chloride respectively; it is possible to compute the yielded moles of product by each reactant and then determine which moles are correct based on the limiting reactant; therefore, we proceed as follows:

Thus, since the hydrochloric acid yields the fewest moles of product, we infer it is the limiting reactant, so the correct number moles of magnesium chloride are 3.43 mol.

Best regards!

plasma - state of matter made up of electrically charged particles