Specific Heat Pre-Lab
You may need to use your periodic tables to answer the following questions.
All energy should be found in Joules. Remember that q = mDTCp
- A sample of water changes temperature from 80.0 °C to 20.0 °C.
- What is the specific heat capacity of water, in J/gC°?
- How much energy is required to raise 57.1 grams of water from a temperature
of 36.5 °C to 66.9 °C?
- What mass of magnesium is present if 250 J raises the temperature from
25 °C to 27 °C?
- What is the heat capacity of an unknown metal if 65.5 grams absorbs 1550
J and undergoes a temperature change of 62.0 C°?
- A beaker contains 125.0 grams of water at 22.0 °C. A small piece
of metal with a mass of 38.2 grams is hanging in another beaker of boiling
water, measured at 102 °C. When the metal is removed and added to
the cooler water, the final temperature is 23.3 °C. What is the
specific heat of the metal?
- A 155 gram sample of aluminum at 87.4 °C is placed in a container with
112 grams of water at 46.8 °C. What is the final temperature?
Heat lab][MHS Chem page]