Phoward5376 Phoward5376
  • 17-09-2020
  • Chemistry
contestada

What quantity of heat is required to raise the temperature of 460g of aluminum from 15C to 85C?

Respuesta :

Muscardinus Muscardinus
  • 24-09-2020

Answer:

Q = 28.9 kJ

Explanation:

Given that,

Mass of Aluminium, m = 460 g

Initial temperature, [tex]T_i=15^{\circ} C[/tex]

Final temperature, [tex]T_f=85^{\circ}[/tex]

We know that the specific heat of Aluminium is 0.9 J/g°C. The heat required to raise the temperature is given by :

[tex]Q=mc\Delta T\\\\Q=mc(T_f-T_i)\\\\Q=460\ g\times 0.9\ J/g^{\circ} C\times (85-15)^{\circ} C\\\\Q=28980\ J\\\\\text{or}\\\\Q=28.9\ kJ[/tex]

So, 28.9 kJ of heat is required to raise the temperature.

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