Moderators: Chem_Mod, Chem_Admin

Posts: 102
Joined: Fri Aug 09, 2019 12:15 am


Postby RRahimtoola1I » Tue Feb 11, 2020 1:59 pm

How do you break this problem down to solve for the ice melting and the water heating. The solution manual is not making sense?

An ice cube of mass 50.0 g at 0.0 8C is added to a glass containing 400.0 g of water at 45.0 8C. What is the final tempera- ture of the system (see Tables 4A.2 and 4C.1)? Assume that no heat is lost to the surroundings.

Jessica Booth 2F
Posts: 101
Joined: Fri Aug 30, 2019 12:18 am

Re: 4.C.13

Postby Jessica Booth 2F » Tue Feb 11, 2020 2:14 pm

Because energy isn't lost you know that q1+q2=0 which means that q1=-q2. q1 is the heat required to first melt the ice and then increase its temperature to the final temp. So . Also, q2 is the heat lost by the water when it is cooled down. So, . Remember that the final temperature is the same for both the water and the ice so then you can solve for the final temp.

Return to “Phase Changes & Related Calculations”

Who is online

Users browsing this forum: No registered users and 2 guests