Stoichiometry Coach

Instructions

Build a conversion setup, watch the units cancel, and make sense of the numbers before you calculate.

  1. Read the problem and identify the given quantity and requested unit.
  2. Build conversion factors so units cancel, using the balanced equation when needed.
  3. Check the setup and review the feedback before completing the calculation.

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Feedback after each step

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1. Read the problem

Assume complete reaction

You have
You need
Your route

2. Build your setup

A path from given to wanted

    Choose a conversion factor

    Some choices contain errors. Add factors in order, use the arrows to rearrange them, or × to remove one.

    3. Calculate and check

    What is your final answer?

    Enter three significant figures. Scientific notation works, too (1.20e2 or 1.20 x 10^2).

    About this activity

    Set up conversion factors, cancel units and solve stoichiometry problems one step at a time. Feedback points out the step that went wrong.

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