# Stoichiometry and limiting reactants worksheet answers

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## Stoichiometry - Limiting and Excess Reactant

How to Find Limiting Reactants - How to Pass Chemistry

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If you're seeing this message, it means we're having trouble loading external resources on our website. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Science Chemistry Chemical reactions and stoichiometry Limiting reagent stoichiometry. Stoichiometry: Limiting reagent. Limiting reactant example problem 1. Practice: Limiting reagent stoichiometry. Limiting reagents and percent yield.

A balanced chemical equation describe the ratios at which products and reactants are respectively produced and consumed. That said, the coefficients of the balanced equation have nothing to do with the actual quantity of reactants you start with, as you can mix any amount you choose, but clearly the maximum yield theoretical yield must be limited by the reactant that gets consumed up first, the limiting reagent. The reagent that remains is called the excess reagent. This can be easily understood by the analogy of making bicycles, where each bike requires 2 tires and one frame. The "equation" becomes:.

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations. We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page. The following Stoichiometry Road Map gives a summary of how to use stoichiometry to calculate moles, masses, volumes and particles in a chemical reaction with limiting and excess reactants. Scroll down the page for more examples and solutions.

When there is not enough of one reactant in a chemical reaction, the reaction stops abruptly. To figure out the amount of product produced, it must be determined reactant will limit the chemical reaction the limiting reagent and which reactant is in excess the excess reagent. One way of finding the limiting reagent is by calculating the amount of product that can be formed by each reactant; the one that produces less product is the limiting reagent. The following scenario illustrates the significance of limiting reagents. In order to assemble a car, 4 tires and 2 headlights are needed among other things. In this example, imagine that the tires and headlights are reactants while the car is the product formed from the reaction of 4 tires and 2 headlights. If you have 20 tires and 14 headlights, how many cars can be made?

## Limiting reactant example problem 1

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## Limiting Reagents

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1. Limiting reactant example problem 1 (video) | Khan Academy