Chemistry, 04.07.2019 01:00, lunarwoo

Ahot lump of 115.7 g of an unknown substance initially at 168.3°c is placed in 25.0 ml of water initially at 25.0°c and allowed to reach thermal equilibrium. the final temperature of the system is 76.5°c. what is the identity of the unknown substance? assume no heat is lost to the surroundings

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Ahot lump of 115.7 g of an unknown substance initially at 168.3°c is placed in 25.0 ml of water init...