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Jane performed the following trials in an experiment.

Trial 1: Heat 80.0 grams of water at 15.0 °C to a final temperature of 65.0 °C.
Trial 2: Heat 80.0 grams of water at 10.0 °C to a final temperature of 65.0 °C.

Which statement is true about the experiments?

The same amount of heat is absorbed in both the experiments because the mass is same.
The same amount of heat is absorbed in both the experiments because the final temperature is same.
The heat absorbed in Trial 2 is about 1,240 J greater than the heat absorbed in Trial 1.
The heat absorbed in Trial 2 is about 1,674 J greater than the heat absorbed in Trial 1.

Respuesta :

Answer:

The Correct answer is D

Explanation:

The heat absorbed in Trial 2 is about 1,674 J greater than the heat absorbed in Trial 1.

Eduard22sly

The statement that is true about Jane's experiment is:

The heat absorbed in Trial 2 is about 1,674 J greater than the heat absorbed in Trial 1.

To solve this question, we'll begin by calculating the heat absorbed in each trial.

Trial 1:

Mass of water (M) = 80 g

Initial temperature of water (T₁) = 15 °C

Final temperature of water (T₂) = 65 °C

Change in temperature of water (ΔT) = T₂ – T₁

= 65 – 15

= 50 °C

Specific heat capacity of water = 4.184 J/gºC

Heat absorbed (Q₁) =?

Q₁ = MCΔT

Q₁ = 80 × 4.184 × 50

Q₁ = 16736 J

Trial 2:

Mass of water (M) = 80 g

Initial temperature of water (T₁) = 10 °C

Final temperature of water (T₂) = 65 °C

Change in temperature of water (ΔT) = T₂ – T₁

= 65 – 10

= 55 °C

Specific heat capacity of water = 4.184 J/gºC

Heat absorbed (Q₂) =?

Q₂ = MCΔT

Q₂ = 80 × 4.184 × 55

Q₂ = 18410 J

Finally, we shall determine the difference in the heat absorbed. This can be obtained as follow:

Heat absorbed in trial 1 (Q₁) = 16736 J

Heat absorbed in trial 2 (Q₂) = 18410 J

Difference =?

Difference = Q₂ – Q₁

Difference = 18410 – 16736

Difference = 1674 J

From the calculations made above, we see that the heat absorbed in trial 2 is 1674 J greater than the heat absorbed in Trial 1.

Therefore, the correct statement is: The heat absorbed in Trial 2 is about 1,674 J greater than the heat absorbed in Trial 1.

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