To correct data gathered from this process, the ASTM recommends using the Dickinson extrapolation method over the Regnault–Pfaundler method. This process is used to remove organic material in a “wet” method that uses perchloric and nitric acids, or a “dry” method performed in a “muffle” instrument. This process is done within a controlled jacket in model 6200 and 6400 isoperibol instruments. To calibrate this process, the Parr Instrument Company sells one gram pellets of (*) benzoic acid. This process leads to rapid changes in sample mass in evolved gas analysis methods such as TGA. The composition of a sample is determined by undergoing this process, followed by gas chromatography, in CHNS/O analysis. This process is done to completion in a crucible in ashing. For 10 points, name this exothermic process whose internal energy change is measured in bomb calorimetry. ■END■
ANSWER: combustion [accept combustion analysis; accept burning; prompt on bomb calorimetry or ashing or elemental analysis until read by asking “what type of reaction is involved?”; prompt on oxidation; prompt on heating by asking “what type of reaction produces the heat?”; reject “fire” or “flames”]
<DN/KP, Chemistry>
= Average correct buzz position