Q = 54.6 J
m = 4.0 g
ΔT = 56°C - 25°C = 31°C
To determine whether a shiny gold-colored rock is actually gold, a chemistry student decides to measure its heat capacity. She first weighs the rock and finds it has a mass of 4.0 g. She then finds that upon absorption of 54.6 J of heat, the temperature of the rock rises from 25 oC to 56 oC.
Find the specific heat capacity of the substance composing the rock and determine whether the value is consistent with the rock being pure gold.
|* At 298 K.|
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Calorimetry concept. You can view video lessons to learn Calorimetry. Or if you need more Calorimetry practice, you can also practice Calorimetry practice problems.