Question

A coffee cup calorimeter contains water at an initial temperature of 20°C and is calculated to have a calorimeter constant (heat capacity) of 75 J/°C. A 28 g piece of an unknown metal is removed from a pot of boiling water with a temperature of 100°C and placed into the calorimeter. The contents of the calorimeter come to an average temperature of 27°C. What is the specific heat capacity of the metal? A) 0.26 J/g·°C B) 3.89 J/g·°C C) 4.18 J/g·°C D) 7.19 J/g·°C E) 75 J/g·°C

          A coffee cup calorimeter contains water at an initial temperature of 20°C and is calculated to have a calorimeter constant (heat capacity) of 75 J/°C. A 28 g piece of an unknown metal is removed from a pot of boiling water with a temperature of 100°C and placed into the calorimeter. The contents of the calorimeter come to an average temperature of 27°C. What is the specific heat capacity of the metal?
A) 0.26 J/g·°C
B) 3.89 J/g·°C
C) 4.18 J/g·°C
D) 7.19 J/g·°C
E) 75 J/g·°C

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Added by Christine W.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Susan Hallstrom

06/24/2022

Step 1

First, we need to calculate the amount of heat absorbed by the water and the calorimeter. The heat absorbed (q) is given by the formula q = mcΔT, where m is the mass, c is the specific heat capacity, and ΔT is the change in temperature. For the water and the Show more…

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A coffee cup calorimeter contains water at an initial temperature of 20°C and is calculated to have a calorimeter constant (heat capacity) of 75 J/°C. A 28 g piece of an unknown metal is removed from a pot of boiling water with a temperature of 100°C and placed into the calorimeter. The contents of the calorimeter come to an average temperature of 27°C. What is the specific heat capacity of the metal? A) 0.26 J/g·°C B) 3.89 J/g·°C C) 4.18 J/g·°C D) 7.19 J/g·°C E) 75 J/g·°C

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