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⚗️ How to solve a stoichiometry problem

Balance the reaction, convert to moles, use coefficients, find limiting reactants, and report yield with units.

10
lessons
~20 min
to learn
🔬 Science
subject
Adults
level
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What you’ll learn

  1. Equation
  2. Moles
  3. Ratio
  4. Mass
  5. Solutions
  6. Limiting
  7. Yield
  8. Excess
  9. Check
  10. Communicate

Questions this course answers

Why must an equation be balanced first?

The coefficients represent conserved atom relationships in the reaction.

What is the bridge to a coefficient ratio?

Reaction coefficients compare amounts in moles.

Which reactant is limiting?

It is consumed first and sets theoretical yield.

What does percent yield compare?

Percent yield is actual divided by theoretical, times one hundred.

What catches a reversed conversion factor?

Dimensional analysis exposes the wrong direction algebraically.

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