Question

Prepare a hot water bath by filling 400 mL beaker with tap water, add about 10 boiling chips to ensure smooth boiling or use your stirring rod, placing it on a hot plate, and bringing it to a boil.

Measure about 20 grams of the metal assigned by your Instructor. Record the exact mass and identity of the metal used in your report sheet.



The unknown that you have been assigned is Aluminum.


Enter the number corresponding to the identity of the metal:

Zinc
Aluminum
Steel

Answer 1

To determine the specific heat and identity of the metal, you can use the equation Q = mCΔT, where Q is the heat transferred, m is the mass of the metal, C is the specific heat, and ΔT is the change in temperature.

Step-by-step explanation:

To determine the specific heat and identity of the metal, you can use the equation Q = mCΔT, where Q is the heat transferred, m is the mass of the metal, C is the specific heat, and ΔT is the change in temperature.

In the given example, the mass of the metal is 92.9 g, the initial temperature is 178.0 °C, and the final temperature is 29.7 °C. The heat transferred to the water can be calculated using the equation Qwater = mwaterCwaterΔTwater.

By equating the heat transferred to the metal and the heat transferred to the water, you can solve for the specific heat. Once you have the specific heat value, you can compare it to the specific heat values of different metals to identify the metal.

Answer 2

To determine the specific heat and identity of a metal, we can use the formula Q = m * C * ΔT, where Q is the heat transferred, m is the mass, C is the specific heat capacity, and ΔT is the change in temperature. By equating the heat transferred in the metal and water, we can solve for the specific heat capacity of the metal and identify it.

Step-by-step explanation:

The specific heat capacity (C) of a substance is the amount of heat required to raise the temperature of 1 gram of the substance by 1 degree Celsius. In this case, we are given the mass and initial and final temperatures of the metal and water. We can use the formula Q = m * C * ΔT, where Q is the heat transferred, m is the mass, C is the specific heat capacity, and ΔT is the change in temperature.

For the metal, we have m = 92.9 g, ΔT = 29.7 °C - 178.0 °C = -148.3 °C, and Q = C * m * ΔT. For the water, we have m = 75.0 g, ΔT = 29.7 °C - 24.0 °C = 5.7 °C, and Q = C * m * ΔT. By setting the amount of heat transferred in the metal equal to the amount of heat transferred in the water, we can solve for the specific heat capacity of the metal and determine its identity.