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Answer: .2) The final temperature will be exactly midway between the initial temperatures of substances A and B.
Explanation:
As we know that,
.................(1)
where,
q = heat absorbed or released
= mass of A = 2x
= mass of B = x
= final temperature = z
= temperature of A
= temperature of B
= specific heat capacity of A = y
= specific heat capacity of B = 2y
Now put all the given values in equation (1), we get
Therefore, the final temperature of the mixture will be exactly midway between the initial temperatures of substances A and B.