Question

Какое количество теплоты нужно затратить чтобы расплавить 2 кг серебра взятого при температуре плавления

Answer 1

1)Q=λm    λ-уд. тепл. плавл.Q=58000Дж/кг*2=116000Дж=116кДж

Answer 2

Calculating the Heat Required to Melt 2 kg of Silver

To calculate the amount of heat required to melt 2 kg of silver, we can use the formula:

Q = m * L

Where: - Q = amount of heat required - m = mass of the substance - L = latent heat of fusion

Given: - m = 2 kg (mass of silver) - L = latent heat of fusion for silver

We can use the specific latent heat of fusion for silver to calculate the amount of heat required.

Specific Latent Heat of Fusion for Silver

The specific latent heat of fusion for silver is the amount of heat energy required to change a unit mass of silver from solid to liquid at its melting point.

The specific latent heat of fusion for silver is approximately 11 kJ/mol.

Calculation

Using the formula Q = m * L, where m = 2 kg and L = 11 kJ/mol, we can calculate the amount of heat required to melt 2 kg of silver.

Q = 2 kg * 11 kJ/mol

Q = 22 kJ

Therefore, approximately 22 kJ of heat energy is required to melt 2 kg of silver at its melting point.

It's important to note that the specific latent heat of fusion for silver may vary slightly based on different sources, but the approximate value is around 11 kJ/mol.

I hope this helps! If you have any further questions, feel free to ask.