A 53.3 g piece of tin has the initial temperature of 105 °C is dropped
into 237 mL of water at 22.7 °C. What is the final temperature? Tin's
Cp is 0.228 J/gºC. Water's is 4.184 J/g C.

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

I’m not sure about this question