The latent heat of melting for lead is 22.4 kJ/kg and that of oxygen is 13.9 kJ/

ID: 1470793 • Letter: T

Question

The latent heat of melting for lead is 22.4 kJ/kg and that of oxygen is 13.9 kJ/kg. This means:

Lead melts at a higher temperature.

Less energy is needed to heat lead than is needed to heat the same mass of oxygen by the same amount.

More energy is needed to melt lead than is needed to heat the same mass of oxygen by the same amount.

Lead melts at a lower temperature.

Lead melts at a higher temperature.

Less energy is needed to heat lead than is needed to heat the same mass of oxygen by the same amount.

More energy is needed to melt lead than is needed to heat the same mass of oxygen by the same amount.

Lead melts at a lower temperature.

latent heat of melting is the heat absorbed or released by a body at constant temperature and pressure for a phase change

The latent heat of melting for lead is 22.4 kJ/kg and for oxygen it is 13.9 kJ/kg

This means for a single Kg of lead to melt , energy of 22.4 kJ is needed and 13.9 KJ is needed for oxygen

This means More energy is needed to melt lead than is needed to heat the same mass of oxygen by the same amount.

so option c is the correct answer

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