A thirsty nurse cools a 2.40 LL bottle of a soft drink (mostly water) by pouring it into a large aluminum mug of mass 0.249 kg and adding 0.122 kg of ice initially at -15.9 ∘C∘C. If the soft drink and mug are initially at 21.0, what is the final temperature of the system, assuming no heat losses?

A thirsty nurse cools a 2.40 LL bottle of a soft drink (mostly water) by pouring it into a large aluminum mug of mass 0.249 kg and adding 0.122 kg of ice initially at -15.9 ∘C∘C. If the soft drink and mug are initially at 21.0, what is the final temperature of the system, assuming no heat losses?