What is the mass of potassium hydrogen carbonate (100.12 g/mol) that decomposes to release 4.25 L of carbon dioxide gas at STP? __KHCO₃(s)
__k₂CO₃(s) + __H₂O(l) + __CO₂(g)
A) 0.476 g
B) 1.90 g
C) 9.50 g
D) 19.0 g
E) 38.0 g
Correct Answer:
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