Calorimeter Constant: Hot/Cold Water - Find & Check

[imapeiceofwod]

Hot water:
v- 50ml
delta t = -28.5

Cold water
v=50ml
delta t = 24.5

delta H of warmwater is a 50g(4.184)(-28.5) = -5962.6
delta H of cold water = 5125.45

From there i don't know what to do to find the Calorimeter constant any help? Also i did the above calculations correct right?

 

[Borek]

Please elaborate on what you did on what you are calculating. What you wrote is hopelessly incomplete.

 

[imapeiceofwod]

I have to determine the calorimeter constant give this data. The hot water is measure and poured into the cold water. I found delta H of the warm and cold water from there I am unsure what i got to do to determine the constant...

Hot water:
v- 50ml
delta T = -28.5 degrees celcius

Cold water
v=50ml
delta T = 24.5 ceclius

delta H =mc delta T
delta H of warmwater is a 50g(4.184)(-28.5) = -5962.6 J
delta H of cold water = 5125.45 J

From there i don't know what to do to find the Calorimeter constant any help? Also i did the above calculations correct right?

fixed, hopefully it more understandable

 

[Borek]

Much better, although I am still not sure about ΔT listed - are these initial minus final respectively? Is 24.5 difference between initial temperature of calorimeter plus 50 mL of cold water and final temperature of everything?

 

[imapeiceofwod]

Much better, although I am still not sure about ΔT listed - are these initial minus final respectively? Is 24.5 difference between initial temperature of calorimeter plus 50 mL of cold water and final temperature of everything?

here are the initial values.
Temp of hot water = 75 degrees C
temp of cold water 22 degrees C
Final temp of mixture 46.5 C

With those values i determined delta T

 

[Borek]

OK, as I expected, you forgot that you are heating not only cold water.