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Katyanochek1 [597]
2 years ago
8

Will mark brainliest if correct

Chemistry
1 answer:
Sergeeva-Olga [200]2 years ago
4 0

Answer:

a and d

Explanation:

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Which arrow or arrows represent reactions that demonstrate a conservation of mass and energy? Explain your answer.
liberstina [14]

Answer:

A

Explanation:

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Using the following equation for the combustion of octane calculate the heat associated with the formation of 100.0 g of carbon
natali 33 [55]

Answer:

The right solution is "-602.69 KJ heat".

Explanation:

According to the question,

The 100.0 g of carbon dioxide:

= \frac{100.0 \ g}{114.33\  g/mole}

= 0.8747 \ moles

We know that 16 moles of CO_2 formation associates with -11018 kJ of heat, then

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= -\frac{0.8747}{16}\times 11018 \ KJ \ of \ heat

= -0.0547\times 11018

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3 years ago
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anygoal [31]

Answer:

1

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