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chemistry help for specific heat problem?
one piece of copper at 105 degrees C has exactly twice the mass of another piece, which is at 45 degrees C. Both are placed in a calorimeter whose heat capacity is negligible. what is the final temp in the calorimeter? the specific heat of copper is 0.387 J/g degreeC.
thanks
2 Answers
- 1 decade agoFavorite Answer
85oC
Though not the exact way of doing it, this shortcut will work since its all the same material with the same heat capacities and there are no phase changes.
(105*2+45)/3=85
For each 1 degree in temp drop in the hotter, the cooler will go up 2 degrees.
- 4 years ago
this question is complicated because of the fact it asks for a temperature after a undeniable volume of time. To do a short lived (time-based) diagnosis, you're able to prefer to be conscious of the thermal conductivities of the components and warmth flow coefficients and different nasty stuff. What you're able to do is assume that when 4 hours the iron and the water are a similar temperature, it is especially secure to think of. you besides would ought to think of that no warmth is lost to our environment. then you certainly can calculate the inital enthalpies and discover the finished enthalpy of the device, then remedy for the tip temperature, which would be a similar for the two the iron and the water. solid success!