Homework Help: chemistry-thermochemistry

Posted by james on Sunday, October 5, 2008 at 12:55pm.

A student mixes 85.7 g of water at 68.0°C with 50.7 g of water at 24.5°C in an insulated flask. What is the final temperature of the combined water

chemistry-thermochemistry - bobpursley, Sunday, October 5, 2008 at 1:02pm
call the 85 g water water1, and the other water2.
sum of heat changes =0
heatfromwater1+heatfromwater1=0
One will be negative, as one of them cools.

mass1*cw*deltaTemp1+mass2*cw+deltaTemp2=0
I assume you can handle it from here. Tf in each will be the same, ti for each is given. A little algebra in this...

Answer this Question

Related Questions

Chemistry - A student mixes 85.1 g of water at 69.6Â°C with 58.1 g of ...
chemistry - a student mixes 88.6g of water at 74.3 degree Celsius with 57.9g of ...
Chemistry - A student mixes 95.1g of water at 77.5 degree C with 42.7g of water ...
chemistry - A student obtained a clean, dry, glass stoppered flask. The weight ...
chemistry - A student placed 12.5 of glucose () in a 100.- volumetric flask, ...
Chemistry Help Please!!! - A student placed 17.0 g of glucose (C6H1206) in a ...
Chemistry-Please help - A student placed 11.0 of glucose (C6H12O6) in a ...
Chemistry - A student placed 12.0g of glucose (C6H1206) in a volumetric flask, ...
CHEMISTRY!! - A student determined the calorimeter constant of the calorimeter. ...
chem - A student placed 12.5 of glucose (C6H12O6) in a 100ml volumetric flask, ...

For Further Reading

First Name:
School Subject:
Answer: