dxris5612 dxris5612
  • 24-02-2021
  • Chemistry
contestada

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

Respuesta :

Muscardinus Muscardinus
  • 25-02-2021

Answer:

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 :

[tex]Q=mc\Delta T[/tex]

c is specific heat of water

[tex]Q=0.044\times 4200\times (-14-18)\\\\Q=-5913.6\ J[/tex]

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

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