Assignment 6 due May 22 (Tomorrow)

Hey everybody, here's the hw for tonight and remember to keep track of your units: Calories for Q, Cal/mlC for c, ml for volume and Degrees Celsius for T. I Changed the numbers slightly so that they should work better, but don't rely on them working perfectly.


Expect c to change with the modified numbers. It should be close to, but more than 1.00


Calculating the specific heat of oil: Name__________  

Remember the equation Q=cV∆T

These are slightly modified numbers from Gavin’s sheet:

1.) Trial 1: The temperature of 75ml of water changes from 80 0F to 149 0F over three minutes of being heated by a constant flame. Calculate the number of calories added by multiplying the change in temperature by the volume of water.


Trial 2: For the 150ml of water, the temperature began at 68 0F and ended at 102 0F. How many calories were added?


Trial 3: for 225ml of water the temperature started at 750F of water and ended at 100 0F. How many calories were added?



Find the average calories added by adding together the calories found in all 3 trials and then dividing by 3.




2.) Oil trials: Figure out the specific heat of oil by setting up the equation Q=cV∆T where V is your 75ml, Q is your average Q from trials Q=cV∆T and, for this trial, your initial temperature is 84 0F and your final temperature is 148 0F



Find c again with trial two where V = 150, your initial temperature is 86 0F and your final temperature is 118 0F.


What is your average c?’