Question

Which of the following samples has the highest specific heat capacity?

a) A 100 kg sample of lead requires 13 000 J to increase its temperature by 1 K
b) A 50 g sample of water releases 1050 J as it cools by 5 degree Celsius
c) A 2 kg sample of copper receives 2340 J of thermal energy as it heats up from 20 degree Celsius to 23 degree Celsius
d) All of the samples above have the same specific heat
e) It is impossible to compare the specific heat of the materials from the information given

Answer 1

specific heat=heat/(mass*deltaTemp)

a. c=13000/100*1= 130J/kg*K

b. c=1050/.050*5=1050/.25=4000J/kg*K

c. c=2340/2*3=amost 400J/kgK

check my work.

Answer 2

i think that it is right