October 16th, 2018, 12:14 PM  #1 
Senior Member Joined: Dec 2015 From: somewhere Posts: 534 Thanks: 81  Temperature of water
$\displaystyle 3ml$ water with temperature $\displaystyle T_1=$ 7 degrees Celsius is combined with $\displaystyle 5ml$ water with temperature $\displaystyle T_2=$ 2 degrees Celsius Find the temperature $\displaystyle T$ of the total water 
October 16th, 2018, 12:59 PM  #2 
Senior Member Joined: Sep 2015 From: USA Posts: 2,452 Thanks: 1337 
I like to think of these problems in terms of heat, which is just some amount of a substance at a temperature. Heat adds. Here we end up with $h_i = vol_i \cdot T_i~ml\cdot degC$ $h_{total} =3 \cdot 7 + 5 \cdot 2 =31~ml\cdot degC$ $vol_{total} = 3+5 = 8ml$ $T = \dfrac{h_{total}}{vol_{total}}=\dfrac{31~ml\cdot degC}{8~ml} = \dfrac{31}{8}~degC$ 

Tags 
temperature, water 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
What happens to the temperature when salt is added to water?  pianist  Chemistry  3  May 29th, 2017 01:32 AM 
When a drop of water falls into water, where do the splashes come from?  Ganesh Ujwal  Physics  2  January 3rd, 2015 06:47 AM 
1 gram of water 10C + 1 calorie of heat = 1 gram of water @.  rsoy  Physics  1  December 15th, 2013 02:54 PM 
Temperature of small quantity of water  Chikis  Physics  2  August 16th, 2012 08:13 PM 
Water temperature calculation  doughboy33  Elementary Math  7  August 7th, 2010 05:56 AM 