A 44g sample of liquid water at 18C ends up as ice -14C. How much energy is involved in this change?

Q = -5913.6 J

Explanation:

Given that,

Mass of the sample, m = 44 g = 0.044 kg

Initial temperature = 18°C

Final temperature = -14°C

We need to find the energy involved in this change. The energy involved in this process is given by :

c is specific heat of water

So, 5913.6 J of energy is involved in this change.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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