Digital ACT Science Practice Question #1547
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2 KI required per 1 Pb -> KI runs out first.
Stoichiometry requires 2 moles of KI for each mole of Pb(NO3)2. With 0.10 mol of each, KI is exhausted after forming 0.05 mol PbI2. KI is the limiting reactant....
Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...
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