What is the final temperature when 150.0 g of water at 90.0 °c is added to 100.0 g of water at 30.0 oc? note that c, of water cancels. -qhot

Answer : The final temperature is,

Explanation :

As we know that,  

        .................(1)

where,

q = heat absorbed or released

= mass of water at = 150 g

= mass of water at = 100 g

= final temperature = ?

= temperature of lead =

= temperature of water =

= same (for water)

Now put all the given values in equation (1), we get

Therefore, the final temperature is,