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Answer:
642.6 x 10³ J
Step-by-step explanation:
Q = ms( ) ; m is mass , s is specific heat and is rise in temperature .
Putting the given data in the equation we get as follows
Q = 4.5 x 1.68 x 10³ x ( 97 - 12 )
= 642.6 x 10³ J .
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