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sergejj [24]
2 years ago
10

Help me (number 5).

Chemistry
1 answer:
olga55 [171]2 years ago
6 0

Answer:

a. HF

Explanation:

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Answer : The correct option is, (D) 3600 kJ

Explanation :

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First we have to calculate the moles of octane.

\text{ Moles of octane}=\frac{\text{ Mass of octane}}{\text{ Molar mass of octane}}=\frac{75g}{114.23g/mole}=0.656moles

Now we have to calculate the heat released in the reaction.

As, 1 mole of octane released heat = -5500 kJ

So, 0.656 mole of octane released heat = 0.656 × (-5500 kJ)

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