3 years ago

Select the correct answer. Which statement is true for a heating curve?

Chemistry

1 answer:

Anon25 [30]3 years ago

8 0

Answer:

Explanation:

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Tems11 [23]

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Determine the heat needed to warm 25.3 g of copper from 22 degrees celsius to 39 degrees celsius.

Serggg [28]

Answer:

The heat needed to warm 25.3 g of copper from 22°C to 39°C is 165.59 Joules.

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$Q=mc\Delta T$

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Q = heat absorbed or heat lost

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m = Mass of the substance

ΔT = change in temperature of the substance

We have mass of copper = m = 25.3 g

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ΔT = 39°C - 22°C = 17°C

Heat absorbed by the copper :

$Q=25.3 g\times 0.385 J/g^oC\times 17^oC=165.59 J$

The heat needed to warm 25.3 g of copper from 22°C to 39°C is 165.59 Joules.

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