Question

[2]

Answer 1

Explanation:

The temperature of the molten iron remained constant at 2750°C because of the heat absorbed to effect the phase change and not to change the temperature.

The heat of vaporization is a latent or hidden heat absorbed by substances that causes a phase change from liquid to gas.

• In essence, the heat is used to break intermolecular bonds between the particles of the melted vat.
• If enough heat is no supplied the molten vat will not boil off and become vapor.
• In transitioning from liquid to gas, heat is absorbed by a body to effect the phase change.
• When the body acquires enough heat, the particles are able to break off and boil.
• At the 2750°C  mark, this is what is happening.

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