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Potassium Metal (K)reacts Violently When Added to Water According to the Balanced

Question 20

Multiple Choice

Potassium metal (K) reacts violently when added to water according to the balanced equation: 2 K(s) + 2 H2O(l) → 2 KOH(aq) + H2(g) . How many moles of H2O are needed to react completely with 7.54 mol of K?


A) 2 mol of H2O
B) 7.54 mol of H2O
C) 15.1 mol of H2O
D) 3.77 mol of H2O

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