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Answer :
Final answer:
To thaw a 0.450-kg package of frozen vegetables at 0°C with the heat of fusion of water, a. 35.9 kilocalories of heat transfer is required.
Explanation:
To calculate the heat transfer required to thaw a 0.450-kg package of frozen vegetables at 0°C with a latent heat of fusion equivalent to that of water (79.8 kcal/kg), we use the formula:
Heat transfer (Q) = mass (m) × latent heat of fusion (L_f)
Here,
- Mass (m) = 0.450 kg
- Latent heat of fusion (L_f) = 79.8 kcal/kg
Therefore, the heat transfer required:
Q = 0.450 kg × 79.8 kcal/kg
Q = 35.91 kcal
After rounding to two decimal places, the heat transfer required is 35.9 kcal.
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