Tuesday, February 11, 2014

Specific Heat of Metal Lab

Our homework tonight is...
1.Webassign due tonight by 11:59 pm
2.The two worksheets on specific heat capacity 
3. Lab due Friday 

Hey guys! So today in class we did a lab. The purpose of the lab was to identify a sample of metal by  determining its specific heat capacity. 

We started class by answering the pre-lab questions...
1. ~50,000J.
2. You shouldn't eat snow to get water because your body will use energy to make that snow into "usable water" instead on using energy to heat your body. You'll basically freeze from the inside out. So don't eat snow :)

We then immediately started the lab. 

Procedure:
1. Fill a 600mL beaker half full with water and heat to boiling using a hot plate. 
2. Record the mass of the metal bar. CAREFULLY place the metal bar into the beaker. Don't let it sit at the bottom, suspend it above the bottom, still submerging it in the water. 
3. Prepare a calorimeter (styrofoam coffee cup) for use: place about 100mL of water in the calorimeter. Record the exact volume in a data table
4. Measure the initial temperature of the water in the calorimeter and record it in your data table
5. CAREFULLY take the metal bar out of the boiling beaker and place it into the calorimeter. Use a stirring rod to stir the water. Then record the highest final temperature the water reaches. 

Here is the data Pamela and I got...

Next Author: Mary L. 

No comments:

Post a Comment