In a laboratory experiment, a calorimeter is used to find the specific heat of a

Question

In a laboratory experiment, a calorimeter is used to find the specific heat of an unknown metal. 100.0 grams of dry metal shot are placed in a cup and heated to a temperature of 95 °C. The calorimeter is partially filled with 150 g of water at 20.0 °C. The mass of the inner aluminum cup and of the aluminum stirrer is 60.0 g. The hot shot is poured quickly into the cup and the calorimeter is sealed. After the system has reached thermal equilibrium, the final temperature is 24.0 °C. What is the metal? (Look this up by using the specific heat table.)  

Question 24 options:

steel

aluminum

copper

lead

steel

aluminum

copper

lead

Explanation / Answer

heat lost = heat gain

m_metal*C_metal*(Tf-Ti)=m_water*C_water*(Tf-Ti)+m_aluminum*C_aluminum*(Tf-Ti)

0.1*C_metal*(95-24)=0.15*4186*(24-20)+0.06*900*(24-20)

===> C_metal=384.17 J/kg

specific heat capacity of copper is also C_copper=384.17 J/kg

the given metal is copper,

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.