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CLEP Chemistry Practice Test

Category - Chemistry

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Black powder was used as a propellant for fireworks for centuries. One of the components of black powder is potassium nitrate (KNO₃). Black powder containing 1 mol of KNO₃ releases 289 kJ of heat during combustion. The molar mass of KNO₃ is 101 g/mol. How much heat is released if a firework contains 250 g of KNO₃?

117 kJ
715 kJ
29, 189 kJ
72, 250 kJ

Explanation

Answer: B - 715 kJ

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CLEP Chemistry Practice Test

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CLEP Chemistry Practice Test

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