g some salts are soluble in water even though the overall process is endothermic and the solution becomes colder during dissolution. Why does this happen

See explanation

Explanation:

We must recall that a process is spontaneous when the change in free energy is negative.

Hence;

∆G= ∆H - T∆S is expected to give us a negative value.

However, even when the overall dissolution process is endothermic, the positive change in entropy due to increase in the number of particles in solution leads to a negative value of free energy thereby making the process spontaneous.

Therefore, some salts are soluble in water even though the overall process is endothermic and the solution becomes colder during dissolution due to increase in entropy.

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

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