Metallic magnesium reacts with steam to produce magnesium hydroxide and hydrogen gas. a. If 16.2 g Mg are heated with 12.0 g H2O, what is the limiting reactant? b. How many moles of the excess reactant are left? c. How many grams of each product are formed?

0.334 mol

Explanation:

What is the limiting reactant when 16.2 g Mg is heated with 12.0 g H2O? Magnesium hydroxide and hydrogen gas are produced when metallic magnesium interacts with steam. How many moles of surplus reactant remain after 16.2 g Mg is heated with 12.0 g H2O? There is still 0.334 mol of surplus reactant.

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every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.