Question

Определить кол-во теплоты необходимое для отвердевания 2 тонн(перевести) расплавленного алюминия,взятого при температуре плавления и остывшего до 60 градусов цельсия. Ребята,помогите(((

Answer 1

Tпл=660 градусов С
Са=920 Дж/кг* градус
Q=Ca*m*(tgk-60)=920*2000*(660-60)=1104[МДж]

Answer 2

Calculating Heat Required to Solidify Aluminum

To determine the amount of heat required to solidify 2 tons of molten aluminum, we can use the formula:

Q = m * L

Where: - Q = heat required (in joules) - m = mass of the substance (in kg) - L = specific latent heat of fusion (in J/kg)

Mass of Aluminum

The mass of 2 tons of aluminum can be converted to kilograms: - 1 ton = 1000 kg - Therefore, 2 tons = 2000 kg

Specific Latent Heat of Fusion for Aluminum

The specific latent heat of fusion for aluminum is required to calculate the heat required for solidification. The specific latent heat of fusion represents the amount of heat required to change a unit mass of a substance from liquid to solid at its melting point.

Unfortunately, the specific latent heat of fusion for aluminum is not provided in the search results. Therefore, I recommend referring to a reliable scientific source or handbook to obtain this value.

Temperature Change

The temperature change is also a factor in the calculation. The aluminum is taken at its melting temperature and then cooled to 60 degrees Celsius. The specific heat capacity of aluminum is required to calculate the heat required for this temperature change.

Unfortunately, the specific heat capacity of aluminum is not provided in the search results. Therefore, I recommend referring to a reliable scientific source or handbook to obtain this value.

Conclusion

To accurately calculate the heat required for the solidification of 2 tons of molten aluminum, we need the specific latent heat of fusion and the specific heat capacity of aluminum. Once these values are obtained, the calculation can be performed using the provided formula.

If you have access to the specific latent heat of fusion and the specific heat capacity of aluminum, I would be happy to assist you further with the calculation.