115898 J

– To melt 1 gram of ice requires 80 calories. (A calorie is defined as the amount of energy needed to raise one gram of water 1°C.)

In order to melt 35 grams (0.035 kg) of ice, Q_in = 0.035 kg × 334 kJ/kg = 11.69 ~ 11.7 kJ of heat energy is required.

6279 Joules

Answer Expert Verified. Heat always flows from hot to cold. The aluminum is hotter than the water in the cup so the answer is 2: The heat is transferred from the aluminum to the water, and the temperature of the water increases.

Key Takeaways: Heat of Fusion for Melting Ice

1. Heat of fusion is the amount of energy in the form of heat needed to change the state of matter from a solid to a liquid (melting.)
2. The formula to calculate heat of fusion is: q = m·ΔHf

2260 J

Therefore, to melt 2 kg of ice 835.48 KJ of heat is required. Happy Answering!

Similarly, while ice melts, it remains at 0 °C (32 °F), and the liquid water that is formed with the latent heat of fusion is also at 0 °C. The heat of fusion for water at 0 °C is approximately 334 joules (79.7 calories) per gram, and the heat of vaporization at 100 °C is about 2,230 joules (533 calories) per gram.

Melting is also called fusion, and the energy required to bring about this change of state is called the heat of fusion or the enthalpy of fusion. Freezing and melting are the change of state from liquid to solid and from solid to liquid.

The molar heat of fusion value is used at the solid-liquid phase change, REGARDLESS of the direction (melting or freezing). Solution: divide the molar heat of fusion (expressed in Joules) by the mass of one mole of water. This value, 334.166 J/g, is called the heat of fusion, it is not called the molar heat of fusion.

The heat of fusion (see thermal fusion), the heat that must be applied to melt a solid, must be removed from the liquid to freeze it. Heating a solid provides the particles with the heat of fusion necessary to allow them to escape one another’s influence enough to move about in the liquid state.

The heat of fusion is the amount of heat required to melt the frozen solvent. It can be used to determine the freezing point depression of solute. The larger the value of heat of fusion or heat of vaporization, the stronger the intermolecular binding forces in the solid or liquid.

Solids can be heated to the point where the molecules holding their bonds together break apart and form a liquid. The most common example is solid ice turning into liquid water. This process is better known as melting, or heat of fusion, and results in the molecules within the substance becoming less organized.

Nuclear fusion is the joining of two nuclei to form a heavier nuclei. The reaction is followed either by a release or absorption of energy. Fusion of nuclei with lower mass than iron releases energy while fusion of nuclei heavier than iron generally absorbs energy.

Explanation: In condensation,gaseous stats is changes into liquid. So it will release more energy to convert from one state to another state.So it is exothermic process in which heat is released.

endothermic process

An exothermic reaction gives off heat energy. Condensation is the process by which water vapor turns into liquid water. This typically occurs when water vapor molecules come into contact with cooler molecules. This causes the water vapor molecules to lose some energy as heat.

condensation

The boiling point of water is 100 degrees Celsius. At this temperature the water will begin to change from the liquid state to the gas state. During the conversion process, temperature does not increase. It is, therefore, possible to have both liquid water and steam that exist at 100 degrees Celsius.