To determine the specific heat of an object, a student heats it to 100 degrees c
ID: 2107848 • Letter: T
Question
To determine the specific heat of an object, a student heats it to 100 degrees celsius in boiling water. She then places the 103g object in a 194g aluminum calorimeter containing 147g of water. The aluminum and water are initially at a temperature of 19.2 degrees celsius, and are thermally insulated from their surroundings.
A) If the final temperature is 23.1 degrees celsius, what is the specific heat of the object?
B) Referring to the table, identify the material in the object.
Substance Specific heat, (J/kg K) Water 4186 Beryllium 1820 Aluminum 900 Glass 837 Silicon 703 Iron (steel) 448 Copper 387 Silver 234 Gold 129 Lead 128
Explanation / Answer
Q object + Q aluminum + Qwater = 0
.103*c*(23.1-100) + .194*900*(23.1-19.2) + .147*4186*(23.1-19.2)=0
c=389
b) Its copper
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.