Q=mc\Delta T
Q= 40.5g x 0.900 J/g degree Celsius x 7.5
Q= 273.4 J.
Even if it is cooled , we use the same temperature as heating it.
Pressure = force/area
Pressure = 10.5/0.5
Pressure = 21 Pa
The answer is B. Similar fossils provide a basis in which to measure geologic time.