Chapter 15 Laboratory: Thermochemistry and Calorimetry 279
q: 2 The actual values for the specific heat of lead and iron are 0.127 J/g · °C and 0.450 J/g · °C, respectively. Calculate the percent
error of the value you obtained experimentally.
q: 3 Propose several possible explanations for experimental error.
q: 4 After completing this laboratory, a student learned that her digital thermometer consistently reads 0.8°C high. What effect did
this error have on the specific heat values that she determined experimentally? Why?
q: 5 After completing this laboratory, a student learned that his graduated cylinder consistently delivered 5% less liquid than
indicated. What effect did this error have on the specific heat values that he determined experimentally? Why?