This high school chemistry poster walks students through solving stoichiometry problems in 4 clear steps using a worked example (grams of CO₂ from 10g CH₄): (1) write the balanced equation, (2) convert given to moles using molar mass, (3) apply the mole ratio from the equation, (4) convert moles to desired unit. A Mole Map at the bottom shows all conversion pathways between mass, moles, particles, and volume. Perfect for: • High school chemistry and AP Chemistry stoichiometry units • Mole conc