If a 750.0 gram sample of water is cooled for 95.0 oC to 17 oC, how much heat is released? CP = 4.18 J/g oC

Respuesta :

Answer:

Heat, Q = 262 kJ

Explanation:

Given that,

Mass of a sample, m = 750 g

Initial temperature, [tex]T_i=95^0\ C[/tex]

Final temperature, [tex]T_f=17^0\ C[/tex]

The specific heat of the sample, [tex]c=4.18\ J/g^0 C[/tex]

We need to find the amount of heat released. The amount of heat released is given by the formula as follows :

[tex]Q=mc\Delta T\\\\Q=750\times 4.48\times (17-95)\\\\Q=-262080\ J\\\\Q=-262\ kJ[/tex]

So, 262 kJ of heat is released by the sample.

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