Question

please help.

1. Calculate the amount of heat necessary to raise the temperature of a 3 kg sample of aluminum from 40°C to 95°C if the specific heat capacity is 900 J/kg°C.



2. Copper has a specific heat capacity of 385 J/kg°C. What is the temperature change of a 4.1 kg sample of copper when 780 J of energy is applied?



3. A 1.1 kg piece of iron absorbs 15686 J of energy when the temperature changes from 16°C to 47°C. What is the specific heat capacity of iron?



4. How much heat is removed to lower the temperature of a sample of a 0.778 kg sample of water from 94°C to 26°C if the specific heat capacity of water is 4186 J/kg°C?



5. You are given three metal samples and you apply the same amount of heat to each one. The temperature changes of the samples vary as follows: Sample 1 changes 20°C, Sample 2 changes 35°C, and Sample 3 changes 50°C. Which sample has the highest specific heat capacity and why?

Answer 1

Sample 3 has the highest specific heat capacity because it experienced the greatest temperature change with the same amount of heat applied.