The Lighter Pile Is the One Left Over

You'll learnto run grams through moles and the mole ratio to find the limiting reactant and the mass of product.

Ten grams of hydrogen and sixty-four grams of oxygen go into a flask, and the hydrogen is the one left over at the end. Grams decide nothing in chemistry; moles do, and the balanced equation only ever speaks in moles. Twelve short steps; press Next for each one.

12 STEPS · 6 QUICK CHECKS · 2H₂ + O₂ → 2H₂O · 10.0 g H₂ · 64.0 g O₂ · v4

grams in · moles compared · one reactant sets the yield

Before you start

What you're looking at

A balanced equation, a ledger that converts grams to moles, and a bar chart of both.

The question

Which reactant runs out first, and how much water can it make?

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