find the final temperature

Question

4 grams CaCl₂ is dissolved in 40 grams of water at 1 degree C. Find the final temperature of the water. 

Answer 1

Need the heat energy aka Joules "q" for this problem in order to solve.

 

Here's the equation:

 

q = s m delta T

q = s m (Tf - Ti)

 

S.H. of liquid water = 4.184 J/gC

 

q = 4.184 J/gC * 44 g *  (Tf - 1 C)

 

Plug in the Joules "q" and do the math