Potassium Hydrogen Carbonate Decomposes According to the Reaction Below: 2

Multiple Choice

Potassium hydrogen carbonate decomposes according to the reaction below: 2 KHCO₃(s) → K₂CO₃(s) + CO₂(g) + H₂O(l)
How many moles of potassium carbonate are produced if 421 g of potassium hydrogen carbonate is heated?

A) 2.10 mol
B) 3.05 mol
C) 17.8 mol
D) 211 mol
E) 4.21 mol